Update PROCESS.md

Co-authored-by: Greg Dennis <[email protected]>

Author: jdesrosiers

PROCESS.md

@@ -73,7 +73,7 @@ publicly available or have real world use at this point.
   removes the feature from the `STAGE-0` registry.
 
 ### STAGE-1
-`STAGE-1` features are included to the specification, but flagged as `STAGE-1`
+`STAGE-1` features are included in the specification, but flagged as `STAGE-1`
 and are not subject to the compatibility requirements of "stable" features. They
 can be added at any time as long as it meets all criteria for `STAGE-1` status.