clairfy maintainer role detail more

Author: eteq

messages/maintainer_access.md

@@ -2,7 +2,7 @@ Hello {NAME},
 
 You have been nominated as {role} and the Coordinating Committee has enthusiastically accepted this nomination! We would be thrilled if you are able to accept this nomination. {More context might be necessary for some people - fill it in here}
 
-You can see the formal description of the maintainers role at http://www.astropy.org/team.html. If you have any uncertainty or if there is extended debate about merging a PR, seek consensus from other maintainers in the Project, or if absolutely necessary, the Coordination Committee.
+In case you are not familiar with the role, maintainers are the people who keep a package or sub-package working. In particular, they review and merge PRs, keep track of what's going on and organize ideas for future development (see https://www.astropy.org/team.html#Subpackage_maintainer for details). In practice this means a fair amount of community interaction when reviewing PRs and related discussion.  As a general guideline, if you have any uncertainty or if there is extended debate about merging a PR, seek consensus from other maintainers in the Project.  If necessary, you should also real free to reach out to the Coordination Committee (by @-mention on github or via [email protected]), as the Coordination Committee has the authority to make decisions when consensus cannot be acheived.
 
 If you would like to accept this nomination, we ask that you familiarize yourself with the following Project guidelines: