Mark SIP 38 as complete

Assigned number 38 to SIP “Converters among optional functions, partial functions, and extractor objects”.

Implemented in Scala 2.13.0 and Scala 3.0.0 in scala/scala#7111

The change did not _require_ a SIP because it was implemented at the library-level. Nevertheless, I decided to keep the SIP for posterity.

Author: julienrf

_sips/sips/2018-08-20-converters-among-optional-functions-partialfunctions-and-extractor-objects.md

@@ -1,7 +1,8 @@
 ---
 layout: sip
-title: SIP-NN - Converters among optional Functions, PartialFunctions and extractor objects
-vote-status: pending
+title: SIP-38 - Converters among optional Functions, PartialFunctions and extractor objects
+vote-status: complete
+vote-text: This SIP has been implemented in Scala 2.13.0 and Scala 3.0.0
 permalink: /sips/:title.html
 redirect_from: /sips/pending/converters-among-optional-functions-partialfunctions-and-extractor-object.html
 ---