DOC: mention show_source_code=False in Examples (#94)

* update docs with CLI cmd to display dostrings only, no src

* edit

Author: zachvalenta

pdoc/documentation.md

@@ -239,6 +239,15 @@ HTML template, run:
 
     $ pdoc --html --output-dir build my_package
 
+If you want to omit the source code preview, run:
+
+    $ pdoc --html --config show_source_code=False my_package
+
+Find additional template configuration tunables in [Custom templates]
+section below.
+
+[Custom templates]: #custom-templates
+
 To run a local HTTP server while developing your package or writing
 docstrings for it, run:
 
@@ -257,6 +266,10 @@ For brief usage instructions, type:
 
     $ pdoc --help
 
+Even more usage examples can be found in the [FAQ].
+
+[FAQ]: https://github.com/pdoc3/pdoc/issues?q=is%3Aissue+label%3Aquestion
+
 
 Programmatic usage
 ------------------