Update flow.md (Kotlin#2196)

MasoodFallahpoor · recheej · commit 095ae43e6ad8 · 2020-12-28T12:25:50.000-08:00
diff --git a/docs/flow.md b/docs/flow.md
@@ -50,7 +50,7 @@
 
 ## Asynchronous Flow
 
-Suspending functions asynchronously returns a single value, but how can we return
+A suspending function asynchronously returns a single value, but how can we return
 multiple asynchronously computed values? This is where Kotlin Flows come in.
 
 ### Representing multiple values
