docs/contrib/gsoc: Move org admins to dedicated section

Add a dedicated section for the organization admins and explain their
role. Also, add a reference to a GSoC page mentioning various tips for
organization admins.

Change-Id: I6c84a80dabf516b2042af018f091204f0f853361
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72514
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nicholas Chin <nic.c3.14@gmail.com>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>

Documentation/contributing/gsoc.md

@@ -1,5 +1,16 @@
 # Google Summer of Code
 
+## Organization admins
+
+The *organization admins* are managing the GSoC program for the coreboot
+organization.
+
+The organization admins are:
+
+  * Felix Singer (primary)
+  * Martin Roth
+  * David Hendricks
+
 
 ## Contacts
 
@@ -8,9 +19,6 @@ please have a look at our [community forums] and reach out to us. Working closel
 with the community is highly encouraged, as we've seen that our most successful
 contributors are generally very involved.
 
-Felix Singer, David Hendricks and Martin Roth are the coreboot GSoC admins for
-2022. Please feel free to reach out to them directly if you have any questions.
-
 
 ## Why work on coreboot for GSoC?
 
@@ -51,6 +59,8 @@ Felix Singer, David Hendricks and Martin Roth are the coreboot GSoC admins for
 
   * [Glossary][GSoC Glossary]
 
+  * [Organization Admin Tips][GSoC Organization Admin Tips]
+
 
 ## Contributor requirements & commitments
 
@@ -273,3 +283,4 @@ questions.
 [GSoC FAQ]: https://developers.google.com/open-source/gsoc/faq
 [GSoC Rules]: https://summerofcode.withgoogle.com/rules
 [GSoC Glossary]: https://developers.google.com/open-source/gsoc/resources/glossary
+[GSoC Organization Admin Tips]: https://developers.google.com/open-source/gsoc/help/oa-tips