GOVERNANCE: linkify, changed some titles

docs/GOVERNANCE.md

@@ -87,7 +87,6 @@ primary curl contact with Fastly.
 
 That's Daniel.
 
-
 # Maintainers
 
 A curl maintainer is a project volunteer who has the authority and rights to
@@ -95,25 +94,25 @@ merge changes into a git repository in the curl project.
 
 Anyone can aspire to become a curl maintainer.
 
-## Maintainer duties
+### Duties
 
 There are no mandatory duties. We hope and wish that maintainers consider
 reviewing patches and help merching them, especially when the changes are
 within the area of personal expertise and experience.
 
-## Maintainer requirements
+### Requirements
 
 - only merge code that meets our quality and style guide requirements.
 - *never* merge code without doing a PR first, unless the change is "trivial"
 - if in doubt, ask for input/feedback from others
 
-## Maintainer recommendations
+### Recommendations
 
 - please enable 2fa on your github account to reduce risk of malicious sourc
   code tampering
 - consider enabling signed git commits for additional verification of changes
 
-## Merge advice
+### Merge advice
 
 When you're merging patches/PRs...
 
@@ -126,13 +125,11 @@ When you're merging patches/PRs...
 
 ## Who are maintainers?
 
-The full list of maintainers can be seen on the following web page. Be aware
-that the level of presence and activity in the project vary greatly between
-different individuals.
+The [list of maintainers](https://github.com/orgs/curl/people). Be aware that
+the level of presence and activity in the project vary greatly between
+different individuals and over time.
 
-https://github.com/orgs/curl/people
-
-## Become a maintainer?
+### Become a maintainer?
 
 If you think you can help making the project better by shouldering some
 maintaining responsibilities, then please get in touch.
@@ -141,7 +138,7 @@ You will be expected to be familiar with the curl project and its ways of
 working. You need to have gotten a few quality patches merged as a proof of
 this.
 
-## Stop being a maintainer
+### Stop being a maintainer
 
 If you (appear to) not be active in the project anymore, you may be removed as
 a maintainer. Thank you for your service!