Add java-driver.docs.scylladb.com replacements

The links in our documentation have a hardcoded version number in them:

https://java-driver.docs.scylladb.com/scylla-3.11.2.x/api/
https://docs.datastax.com/en/drivers/java/3.11/com/datastax/driver/core/Cluster.html

Therefore, a replacement rule is needed to replace the version to a
correct version for a specific driver version we render the docs for.

Before this change, only datastax links were replaced. After this
change, java-driver.docs.scylladb.com links are also replaced.

Author: avelanarius

docs/source/conf.py

@@ -187,7 +187,10 @@ def setup(app):
 
     # Replace DataStax links
     current_slug = os.getenv("SPHINX_MULTIVERSION_NAME", "stable")
-    replacements = {r'docs.datastax.com/en/drivers/java\/(.*?)\/': "java-driver.docs.scylladb.com/" + current_slug + "/api/"}
+    replacements = {
+        r'docs.datastax.com/en/drivers/java\/(.*?)\/': "java-driver.docs.scylladb.com/" + current_slug + "/api/",
+        r'java-driver.docs.scylladb.com\/(.*?)\/': "java-driver.docs.scylladb.com/" + current_slug + "/api/"
+    }
     app.add_config_value('replacements', replacements, True)
     app.connect('source-read', replace_relative_links)