Updated titles to use consistent capitalization (#330)

Co-authored-by: Peter Amstutz <peter.amstutz@curii.com>

Author: MARVEBUKA

CONTRIBUTING.md

@@ -148,7 +148,7 @@ are still working after the change.
 Use “tool description” not “tool wrapper” for describing the first argument
 given to the `cwl-runner` or `cwltool` commands.
 
-### Code examples
+### Code Examples
 
 To include code into a Markdown file you have two options. For external files use
 the following command:

src/faq.md

@@ -8,7 +8,7 @@
 :backlinks: "top"
 ```
 
-## Non "`File`" types using `evalFrom`
+## Non "`File`" Types Using `evalFrom`
 
 ```yaml
 cwlVersion: v1.0  # or v1.1
@@ -38,7 +38,7 @@ outputs:
        outputEval: $(self[0].contents)
 ```
 
-## Rename an input file
+## Rename an Input File
 
 This example demonstrates how to change the name of an input file
 as part of a tool description.
@@ -56,7 +56,7 @@ requirements:
         entryName: $(inputs.src1.basename)_custom_extension
 ```
 
-## Rename an output file
+## Rename an Output File
 
 This example demonstrates how to change the name of an output file
 from the default name given to it by a tool:
@@ -79,7 +79,7 @@ outputs:
       outputEval: ${self[0].basename=inputs.otu_table_name; return self;}
 ```
 
-## Referencing a local script
+## Referencing a Local Script
 
 There are two ways to reference a local script:
 
@@ -134,7 +134,7 @@ outputs: []
 In CWL, everything must be directly stated.
 ```
 
-## Setting `self`-based input bindings for optional inputs
+## Setting `self`-based Input Bindings for Optional Inputs
 
 Currently, `cwltool` can't cope with missing optional inputs if their
 input binding makes use of `self`.
@@ -161,7 +161,7 @@ baseCommand: echo
 outputs: []
 ```
 
-## Model a "one-or-the-other" parameter
+## Model a "one-or-the-other" Parameter
 
 Below is an example showing how
 to specify different strings to be added to a command line,
@@ -184,7 +184,7 @@ baseCommand: echo
 outputs: []
 ```
 
-## Connect a solo value to an input that expects an array of that type
+## Connect a Solo Value to an Input that Expects an Array of that Type
 
 Using [`MultipleInputFeatureRequirement`](https://www.commonwl.org/v1.0/Workflow.html#MultipleInputFeatureRequirement)
 along with
@@ -355,7 +355,7 @@ input:
      My String: $(input.stringvalue)
 ```
 
-## `cwltool` errors due to filenames with space characters inside
+## `cwltool` Errors due to Filenames with Space Characters Inside
 
 `cwltool` does not allow some characters in filenames by default.
 
@@ -369,7 +369,7 @@ Invalid filename: 'a space is here.txt' contains illegal characters
 
 If you can not avoid these dangerous characters, then pass `--relax-path-checks` to `cwltool`.
 
-## CWL Parameter Reference error due to hyphen in input identifier
+## CWL Parameter Reference Error due to Hyphen in Input Identifier
 
 If `cwltool --validate` returns valid
 
@@ -446,7 +446,7 @@ The reference runner and several other CWL implementations support running
 those Docker format containers using the Singularity engine. Directly
 specifying a Singularity format container is not part of the CWL standards.
 
-## Debug JavaScript expressions
+## Debug JavaScript Expressions
 
 You can use the <code>--js-console</code> option of <code>cwltool</code>, or you can try
 creating a JavaScript or TypeScript project for your code, and load it

src/introduction/basic-concepts.md

@@ -7,7 +7,7 @@ command-line. The other sections of the user guide cover the same concepts, but
 in more detail. If you are already familiar with CWL or you are looking for more advanced
 content, you may want to skip this section.
 
-## The CWL specification
+## The CWL Specification
 
 ```{include} /_includes/what-is-cwl.md
 ```
@@ -152,7 +152,7 @@ Hints are similar to requirements, but while requirements list features
 that are required, hints list optional features. Requirements are explained
 in detail in the [Requirements](../topics/requirements-and-hints.md) section.
 
-## FAIR workflows
+## FAIR Workflows
 
 > The FAIR principles have laid a foundation for sharing and publishing
 > digital assets, and in particular, data. The FAIR principles emphasize
@@ -175,7 +175,7 @@ vendors.
 
 `cwltool` also uses the PROV-O standard ontology for data provenance.
 
-## Learn more
+## Learn More
 
 - Semantic Versioning - <https://semver.org/>
 - The CWL Specification page in the CWL website: <https://www.commonwl.org/specification/>

src/introduction/prerequisites.md

@@ -32,7 +32,7 @@ for details on installing WSL2.
 Your operating system also needs internet access and a recent version of Python (3.6+).
 ```
 
-## CWL runner
+## CWL Runner
 
 % https://github.com/common-workflow-language/user_guide/issues/166
 % https://github.com/common-workflow-language/user_guide/issues/64
@@ -89,7 +89,7 @@ You can run the CWL tool description by omitting the `--validate` option:
 :caption: Running `true.cwl` with `cwltool`.
 ```
 
-### cwl-runner Python module
+### Cwl-runner Python Module
 
 `cwl-runner` is an implementation-agnostic alias for CWL Runners. This simply means that the `cwl-runner` alias command can be invoked independently, and is not reliant on a particular CWL runner.
 Users can invoke `cwl-runner` instead of invoking a CWL runner like `cwltool`
@@ -191,7 +191,7 @@ Singularity. You can also use alternative container registries for pulling
 images.
 ```
 
-## Learn more
+## Learn More
 
 - The [Implementations](basic-concepts.md#implementations) topic in the next section, Basic Concepts.
 - The Python `venv` module: <https://docs.python.org/3/library/venv.html>

src/introduction/quick-start.md

@@ -29,7 +29,7 @@ for the sake of simplicity, we are using the term “workflow” here. You will
 more about this in the [basic concepts](basic-concepts.md) section.
 ```
 
-## Installing a CWL runner
+## Installing a CWL Runner
 
 `cwltool` is an implementation of the CWL specification. It is also the
 CWL *Reference Runner* for the specification, and it is compliant with the
@@ -91,7 +91,7 @@ a requirement. You can choose any name for your workflows and Inputs Object
 files.
 ```
 
-## Learn more
+## Learn More
 
 Continue reading the next sections of this User Guide!
 - [List of CWL Implementations](https://www.commonwl.org/implementations).

src/topics/expressions.md

@@ -113,7 +113,7 @@ only in certain fields.  These are:
 
 [file-prop]: https://www.commonwl.org/v1.0/CommandLineTool.html#File
 
-## Using external libraries and inline JavaScript code with `expressionLib`
+## Using External Libraries and Inline JavaScript Code with `expressionLib`
 
 The requirement `InlineJavascriptRequirement` supports an `expressionLib` attribute
 that allows users to load external JavaScript files, or to provide inline JavaScript