RST backtick refactor (all *.rst except manual.rst and rst_examples.rst) (#17258)

Co-authored-by: quantimnot <quantimnot@users.noreply.github.com>

doc/tools.rst

@@ -1,3 +1,5 @@
+.. default-role:: code
+
 ========================
 Tools available with Nim
 ========================
@@ -9,11 +11,11 @@ The standard distribution ships with the following tools:
     document explaining how it works.
 
 - | `Documentation generator <docgen.html>`_
-  | The builtin document generator ``nim doc`` generates HTML documentation
-    from ``.nim`` source files.
+  | The builtin document generator `nim doc` generates HTML documentation
+    from `.nim` source files.
 
 - | `Nimsuggest for IDE support <nimsuggest.html>`_
-  | Through the ``nimsuggest`` tool, any IDE can query a ``.nim`` source file
+  | Through the `nimsuggest` tool, any IDE can query a `.nim` source file
     and obtain useful information like the definition of symbols or suggestions for
     completion.
 
@@ -27,11 +29,11 @@ The standard distribution ships with the following tools:
   | Nim search and replace utility.
 
 - | nimpretty
-  | ``nimpretty`` is a Nim source code beautifier,
+  | `nimpretty` is a Nim source code beautifier,
     to format code according to the official style guide.
 
 - | `testament <https://nim-lang.github.io/Nim/testament.html>`_
-  | ``testament`` is an advanced automatic *unittests runner* for Nim tests,
+  | `testament` is an advanced automatic *unittests runner* for Nim tests,
     is used for the development of Nim itself, offers process isolation for your tests,
     it can generate statistics about test cases, supports multiple targets (C, JS, etc),
     `simulated Dry-Runs <https://en.wikipedia.org/wiki/Dry_run_(testing)>`_,