Add - in "self-contained"

Author: Denton-L

lsb_release/src/lsb_release.examples

@@ -89,5 +89,5 @@ Codename:       TryIt
 
 [REPORTING BUGS]
 Report bugs at http://bugs.linuxbase.org.
-Please include a complete, self contained example that will allow the
+Please include a complete, self-contained example that will allow the
 bug to be reproduced, and say which version of lsb_release you are using.