[lib] Fixed a typo in package docs...

Author: mta452

tehreer-android/src/main/java/com/mta/tehreer/collections/package-info.java

@@ -17,4 +17,4 @@
 /**
  * Provides wrapper collection classes.
  */
-package com.mta.tehreer.collection;
+package com.mta.tehreer.collections;