fix($rootScope): minor typo fixes

Author: mernen

src/ng/rootScope.js

@@ -810,7 +810,7 @@ function $RootScopeProvider(){
 
     /**
      * function used as an initial value for watchers.
-     * because it's uniqueue we can easily tell it apart from other values
+     * because it's unique we can easily tell it apart from other values
      */
     function initWatchVal() {}
   }];

test/ng/rootScopeSpec.js

@@ -216,7 +216,7 @@ describe('Scope', function() {
     });
 
 
-    it('should prevent infinite recursion and print print watcher function name or body',
+    it('should prevent infinite recursion and print watcher function name or body',
         inject(function($rootScope) {
       $rootScope.$watch(function watcherA() {return $rootScope.a;}, function() {$rootScope.b++;});
       $rootScope.$watch(function() {return $rootScope.b;}, function() {$rootScope.a++;});
@@ -328,7 +328,7 @@ describe('Scope', function() {
     }));
 
 
-    it('should always call the watchr with newVal and oldVal equal on the first run',
+    it('should always call the watcher with newVal and oldVal equal on the first run',
         inject(function($rootScope) {
       var log = [];
       function logger(scope, newVal, oldVal) {