Use page names instead of <blah> list with correct casing and bold for UI elements

There are a number of reference to "issues list" in the docs that should be renamed/reworded to "Issues page" to clarify what the issues list is. Similarly, any other pages that referred to as a list should be addressed.

Search for and fix

• "issues list" !159941 (merged)
• other instances of "* list" where * is a GitLab page. !160304 (merged)

Note: I may break the above into more a granular breakdown once I have done the searches.

Related to Adding bold guidance for pages (!159812 - merged)