Polishing.

Author: mp911de

src/main/asciidoc/preface.adoc

@@ -70,7 +70,7 @@ There are a few support options available:
 [[get-started:help:community]]
 ==== Community Forum
 
-Post questions questions regarding Spring Vault on https://stackoverflow.com/questions/tagged/spring-vault[Stackoverflow] to share information and help each other. Note that registration is needed *only* for posting.
+Post questions regarding Spring Vault on https://stackoverflow.com/questions/tagged/spring-vault[Stackoverflow] to share information and help each other. Note that registration is needed *only* for posting.
 
 [[get-started:help:professional]]
 ==== Professional Support