Build docs fix (#3773)

* Ignored forbidden url

Signed-off-by: Elena Khaustova <ymax70rus@gmail.com>

* Returned linkscheck retries

Signed-off-by: Elena Khaustova <ymax70rus@gmail.com>

* Removed odd comment

Signed-off-by: Elena Khaustova <ymax70rus@gmail.com>

---------

Signed-off-by: Elena Khaustova <ymax70rus@gmail.com>
Signed-off-by: Ahdra Merali <ahdra.merali@quantumblack.com>

docs/source/conf.py

@@ -239,12 +239,11 @@
     "https://opensource.org/license/apache2-0-php/",
     "https://docs.github.com/en/rest/overview/other-authentication-methods#via-username-and-password",
     "https://www.educative.io/blog/advanced-yaml-syntax-cheatsheet#anchors",
-    # temporarily, until the file actually exists in `main`
-    "https://github.com/kedro-org/kedro/blob/main/kedro/templates/project/%7B%7B%20cookiecutter.repo_name%20%7D%7D/.flake8",
+    "https://www.quora.com/What-is-thread-safety-in-Python",  # "403 Client Error: Forbidden for url"
 ]
 
 # Comment out settings to fix Client Rate Limit Error 429
-# linkcheck_retries = 5
+linkcheck_retries = 3
 # linkcheck_rate_limit_timeout = 2.0
 
 html_context = {