Correct anchor ID link

Correct the "Setup the prerequisites" anchored link.
## -> # , Setup -> setup , and %20(space) -> -(dash or hyphen) since that's what the id actually uses.
There may be other ways to correct this that are better in mkdocs or to preserve the link (like changing the anchor to actually use uppercase S and spaces for example).

Author: NezSez

docs/guides/contribute/rockydocs_webdev_v2.md

@@ -17,7 +17,7 @@ Running a local copy of the documentation website might be useful in the followi
 
 ## Create the content environment
 
-1. Make sure that the prerequisites are satisfied. If not please skip to the "[Setup the prerequisites](##Setup the prerequisites)" section and then return here. 
+1. Make sure that the prerequisites are satisfied. If not please skip to the "[Setup the prerequisites](#setup-the-prerequisites)" section and then return here. 
 
 2. Change the current working directory on your local system to a folder where you intend to do your writing. 
   We'll refer to this directory as