Update support type labels and wording

Author: pwseg

src/_data/support-types.yml

@@ -1,10 +1,10 @@
 types:
   - display_name: Community
     slug: community
-    support-note: "Segment originally developed but no longer manages or updates community libraries. These libraries are available on GitHub under the MIT License for the open-source community."
-  - display_name: Legacy
-    slug: legacy
-    support-note: "Legacy libraries function reliably and send data as intended but receive no new feature support other than security and privacy updates."
+    support-note: "Segment doesn't manage or update community libraries. These libraries are available on GitHub under the MIT License for the open-source community to fork or contribute."
+  - display_name: Maintenance
+    slug: maintenance
+    support-note: "Maintenance libraries send data as intended but receive no new feature support and only critical maintenance updates from Segment. When possible, Segment recommends using a Flagship version of these libraries."
   - display_name: Flagship
     slug: flagship
     support-note: "Flagship libraries offer the most up-to-date functionality on Segment’s most popular platforms. Segment actively maintains flagship libraries, which benefit from new feature releases and ongoing development and support."