Update pipe.mdx to fix awkward grammar

Author: brettcannon

pages/docs/manual/latest/pipe.mdx

@@ -87,7 +87,7 @@ asyncRequest()
   .send();
 ```
 
-Assuming we don't need the chaining behavior above, we'd bind to each case this using [`@send`](/syntax-lookup#send-decorator) from the aforementioned binding API page:
+Assuming we don't need the chaining behavior above, we'd bind to each case of this using [`@send`](/syntax-lookup#send-decorator) from the aforementioned binding API page:
 
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