chore(AIP-217): fix typo (#1404)

Author: itsStrobe

aip/general/0217.md

@@ -136,7 +136,7 @@ field(s) directly.
 
 [aip-180]: ./0180.md
 
-### Adopting partial succcess
+### Adopting partial success
 
 In order for an existing API that has a default behavior *differing* from the
 aforementioned guidance i.e. the API call returns an error status instead of a