Fix RTD links to additional tools in the README (#10079)

Co-authored-by: Pierre Sassoulas <pierre.sassoulas@gmail.com>

Author: bnjmnp

README.rst

@@ -155,8 +155,8 @@ Pylint ships with two additional tools:
 - pyreverse_ (standalone tool that generates package and class diagrams.)
 - symilar_  (duplicate code finder that is also integrated in pylint)
 
-.. _pyreverse: https://pylint.readthedocs.io/en/latest/pyreverse.html
-.. _symilar: https://pylint.readthedocs.io/en/latest/symilar.html
+.. _pyreverse: https://pylint.readthedocs.io/en/latest/additional_tools/pyreverse/index.html
+.. _symilar: https://pylint.readthedocs.io/en/latest/additional_tools/symilar/index.html
 
 
 .. This is used inside the doc to recover the end of the introduction

doc/conf.py

@@ -95,6 +95,8 @@
     "user_guide/output": "usage/output.html",
     "user_guide/pre-commit-integration": "installation/pre-commit-integration.html",
     "user_guide/run": "usage/run.html",
+    "pyreverse": "additional_tools/pyreverse/index.html",
+    "symilar": "additional_tools/symilar/index.html",
 }