Fix typo in API evolution (#9160)

Author: ananthsub

docs/source/governance.rst

@@ -90,7 +90,7 @@ For API removal, renaming or other forms of backward-incompatible changes, the p
 #. Calls to the deprecated API remain unchanged in their function during the deprecation phase.
 #. Two minor versions in the future at version X+2 the breaking change takes effect.
 
-The "X+2" rule is a recommendation and not a strict requirement. Longer deprecation cylces may apply for some cases.
+The "X+2" rule is a recommendation and not a strict requirement. Longer deprecation cycles may apply for some cases.
 
 New API and features are declared as: