Update impl/README.md

Co-authored-by: Ricardo Zanini <[email protected]>

Author: fjtirado

impl/README.md

@@ -91,7 +91,7 @@ implementation("io.serverlessworkflow:serverlessworkflow-impl-http:7.0.0-SNAPSHO
 
 ## How to use
 
-Quick version is intended for impatient users that want to try something as soon as possible.
+The quick version is intended for impatient users who want to try something as soon as possible.
 
 Detailed version is more suitable for those users interested on a more thoughtful discussion of the API.