runtime: Fix typos in various files

closes: #12836

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Viktor Szépe <viktor@szepe.net>
diff --git a/runtime/syntax/sqlj.vim b/runtime/syntax/sqlj.vim
index c901145..fd0f8f3 100644
--- a/runtime/syntax/sqlj.vim
+++ b/runtime/syntax/sqlj.vim
@@ -16,7 +16,7 @@
 " Read the Java syntax to start with
 source <sfile>:p:h/java.vim
 
-" SQLJ extentions
+" SQLJ extensions
 " The SQL reserved words, defined as keywords.
 
 syn case ignore