fix(purpose): link to maintainers instead of hardcode (#211)

* fix(purpose): link to maintainers

The technical steering committe is outdated. Link it to the more
visible and current MAINTAINERS.md.

MAINTAINERS.md

@@ -8,8 +8,7 @@ approval privileges to the aep-dev organization.
 | Name            | GitHub                                           | Organization |
 | --------------- | ------------------------------------------------ | ------------ |
 | Alfred Fuller   | [@alfus](https://github.com/alfus)               | Buf          |
-| Jeff Albert     | [@monkey-jeff](https://github.com/monkey-jeff)   | Salesforce   |
-| JJ Geewax       | [@jgeewax](https://github.com/jgeewax)           | Meta         |
+| Alex Stephen    | [@rambleraptor](https://github.com/rambleraptor) | Google       |
 | Dan Hudlow      | [@hudlow](https://github.com/hudlow)             | IBM          |
 | Mike Kistler    | [@mkistler](https://github.com/mkistler)         | Microsoft    |
 | Mak Ahmad       | [@makahmad](https://github.com/makahmad)         |              |
@@ -26,3 +25,5 @@ style guide from which aep.dev was forked.
 | Name            | GitHub                                               | Organization |
 | --------------- | ---------------------------------------------------- | ------------ |
 | Luke Sneeringer | [@lukesneeringer](https://github.com/lukesneeringer) |              |
+| Jeff Albert     | [@monkey-jeff](https://github.com/monkey-jeff)       | Salesforce   |
+| JJ Geewax       | [@jgeewax](https://github.com/jgeewax)               | Meta         |

aep/general/0001/aep.md.j2

@@ -44,12 +44,9 @@ and that we largely work on the basis of consensus. However, a limited number
 of designated approvers is necessary, and these committee members will be
 approvers for each AEP on [aep.dev][].
 
-The technical steering committee membership is currently:
-
-- Antoine Boyer (@tinnou), Netflix
-- Ross Hamilton (@rhamiltonsf), Salesforce
-- Mike Kistler (@mkistler), IBM
-- Luke Sneeringer (@lukesneeringer), Google
+See
+[MAINTAINERS.md](https://github.com/aep-dev/aep.dev/blob/main/MAINTAINERS.md)
+for the current committee list (known as maintainers in the document).
 
 The committee is also responsible for the administrative and editorial aspects
 of shepherding AEPs and managing the AEP pipeline and workflow. They approve