fix typo in "Merging Selection Sets" section

yaacovCR · yaacovCR · commit d765eeed833d · 2023-01-14T18:22:11.000+02:00
diff --git a/spec/Section 6 -- Execution.md b/spec/Section 6 -- Execution.md
@@ -774,8 +774,8 @@ sub-selections.
 ```
 
 After resolving the value for `me`, the selection sets are merged together by
-the by calling {CollectSubfields()} so `firstName` and `lastName` can be
-resolved for one value.
+calling {CollectSubfields()} so `firstName` and `lastName` can be resolved for
+one value.
 
 ### Handling Field Errors
 
