Update flow.md (#2196)

diff --git a/docs/flow.md b/docs/flow.md
index 143f9e9..caefc82 100644
--- 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