Markdown link migration part 2 (#20371)

doc/tools.md

@@ -7,36 +7,36 @@ Tools available with Nim
 
 The standard distribution ships with the following tools:
 
-- | `Hot code reloading <hcr.html>`_
+- | [Hot code reloading](hcr.html)
   | The "Hot code reloading" feature is built into the compiler but has its own
     document explaining how it works.
 
-- | `Documentation generator <docgen.html>`_
+- | [Documentation generator](docgen.html)
   | The builtin document generator `nim doc`:cmd: generates HTML documentation
     from ``.nim`` source files.
 
-- | `Nimsuggest for IDE support <nimsuggest.html>`_
+- | [Nimsuggest for IDE support](nimsuggest.html)
   | Through the `nimsuggest`:cmd: tool, any IDE can query a ``.nim`` source file
     and obtain useful information like the definition of symbols or suggestions for
     completion.
 
-- | `C2nim <https://github.com/nim-lang/c2nim/blob/master/doc/c2nim.rst>`_
+- | [C2nim](https://github.com/nim-lang/c2nim/blob/master/doc/c2nim.rst)
   | C to Nim source converter. Translates C header files to Nim.
 
-- | `niminst <niminst.html>`_
+- | [niminst](niminst.html)
   | niminst is a tool to generate an installer for a Nim program.
 
-- | `nimgrep <nimgrep.html>`_
+- | [nimgrep](nimgrep.html)
   | Nim search and replace utility.
 
 - | nimpretty
   | `nimpretty`:cmd: 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](https://nim-lang.github.io/Nim/testament.html)
   | `testament`:cmd: 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)>`_,
+    [simulated Dry-Runs](https://en.wikipedia.org/wiki/Dry_run_(testing)),
     has logging, can generate HTML reports, skip tests from a file, and more,
     so can be useful to run your tests, even the most complex ones.