Minor edits.

war/src/main/webapp/help/security/container-realm.html

@@ -5,11 +5,11 @@
 
   <ol>
     <li>
-      You've been using Jenkinsbefore 1.164 and would like to keep its behavior.
+      You've been using Jenkins before 1.164 and would like to keep its behavior.
     </li>
     <li>
       You've already configured your container with the right security realm and
-      prefer Jenkins to just use it. (sometimes the container offers better documentation
+      prefer Jenkins to just use it. (Sometimes the container offers better documentation
       or custom implementations to connect to a specific user realm.) 
     </li>
   </ol>