Update 0121.md

fix typo

aip/general/0121.md

@@ -106,7 +106,7 @@ reached a steady-state. for values that are related to the resource [state][].
 
 Examples include:
 
-- Following a successful create that is is latest mutation on a resource, a get
+- Following a successful create that is the latest mutation on a resource, a get
   request for a resource **must** return the resource.
 - Following a successful update that is the latest mutation on a resource, a get
   request for a resource **must** return the final values from the update
@@ -187,4 +187,4 @@ and in turn do not increase resource management complexity.
 - **2022-12-19**: Added a section requiring Get and List.
 - **2022-11-02**: Added a section restricting resource references.
 - **2019-08-01**: Changed the examples from "shelves" to "publishers", to
-  present a better example of resource ownership.
+  present a better example of resource ownership.