ZP-250 #comment typo in INSTALL file

git-svn-id: https://z-push.org/svn/z-push/trunk@1762 b7dd7b3b-3a3c-0410-9da9-bee62a6cc5b5

src/INSTALL

@@ -27,7 +27,7 @@ Additional informations can be found in the Zarafa Administrator Manual:
 http://doc.zarafa.com/trunk/Administrator_Manual/en-US/html/_zpush.html
 
 
-Additioal php packages
+Additional php packages
 ----------------------
 To use the full featureset of Z-Push 2 and the z-push-top command line utility, 
 additional php packages are required. These provide SOAP support, access to