Consistent values of title attribute for the specs TOC

Author: milancurcic

doc/specs/stdlib_ascii.md

@@ -1,5 +1,5 @@
 ---
-title: ASCII
+title: ascii
 ---
 
 # The `stdlib_ascii` module
@@ -212,4 +212,4 @@ program demo_reverse
     implicit none
     print'(a)', reverse("Hello, World!") ! returns "!dlroW ,olleH"
 end program demo_reverse
-```
+```

doc/specs/stdlib_bitsets.md

@@ -1,5 +1,5 @@
 ---
-title: Bitsets
+title: bitsets
 ---
 
 # The `stdlib_bitsets` module

doc/specs/stdlib_hash_procedures.md

@@ -1,5 +1,5 @@
 ---
-title: Hash procedures
+title: hash
 ---
 
 # The `stdlib_hash_32bit` and `stdlib_hash_64bit` modules

doc/specs/stdlib_io.md

@@ -1,5 +1,5 @@
 ---
-title: IO
+title: io
 ---
 
 # IO

doc/specs/stdlib_random.md

@@ -1,5 +1,5 @@
 ---
-title: stats_random
+title: random
 ---
 
 # Statistical Distributions -- Pseudorandom Number Generator Module

doc/specs/stdlib_selection.md

@@ -1,5 +1,5 @@
 ---
-title: Selection Procedures
+title: selection
 ---
 
 # The `stdlib_selection` module

doc/specs/stdlib_sorting.md

@@ -1,5 +1,5 @@
 ---
-title: Sorting Procedures
+title: sorting
 ---
 
 # The `stdlib_sorting` module

doc/specs/stdlib_string_type.md

@@ -1,5 +1,5 @@
 ---
-title: string type
+title: string_type
 ---
 
 # The `stdlib_string_type` module

doc/specs/stdlib_stringlist_type.md

@@ -1,5 +1,5 @@
 ---
-title: stringlist type
+title: stringlist_type
 ---
 
 # `stdlib_stringlist_type` module (1-D list of strings)

doc/specs/stdlib_strings.md

@@ -1,5 +1,5 @@
 ---
-title: string handling
+title: strings
 ---
 
 # The `stdlib_strings` module
@@ -606,4 +606,4 @@ program demo_to_string
                     !! 1 wrong demonstrations(`[*]` from `to_string`)
 
 end program demo_to_string
-```
+```