Make page title distinct from page name

Also make see also a cool note, and fix incorrect reference.

purpose.md

@@ -1,11 +1,13 @@
-Purpose
-=======
+# Agaric's Purpose
 
 **To build software and teach practices that help people gain the most power possible over their own lives.**
 
 
-See also [our values](values) and the [cooperative principles](cooperative-principles).  
+```{admonition} See also
+   * [Our values](values)
+   * The [cooperative principles](cooperative-principles)
+```
 
 ```{note}
-We know this work must be done collaboratively, so we also like to [talk with one another](in_team_communication).
+We know this work must be done collaboratively, so we also like to [talk with one another](intra-team-communication).
 ```