docs(ngBind): clarify some of the writing

Author: ndp

src/ng/directive/ngBind.js

@@ -12,10 +12,9 @@
  * Typically, you don't use `ngBind` directly, but instead you use the double curly markup like
  * `{{ expression }}` which is similar but less verbose.
  *
- * One scenario in which the use of `ngBind` is preferred over `{{ expression }}` binding is when
- * it's desirable to put bindings into template that is momentarily displayed by the browser in its
- * raw state before Angular compiles it. Since `ngBind` is an element attribute, it makes the
- * bindings invisible to the user while the page is loading.
+ * It is preferrable to use `ngBind` instead of `{{ expression }}` when a template is momentarily 
+ * displayed by the browser in its raw state before Angular compiles it. Since `ngBind` is an 
+ * element attribute, it makes the bindings invisible to the user while the page is loading.
  *
  * An alternative solution to this problem would be using the
  * {@link ng.directive:ngCloak ngCloak} directive.
@@ -61,10 +60,11 @@ var ngBindDirective = ngDirective(function(scope, element, attr) {
  *
  * @description
  * The `ngBindTemplate` directive specifies that the element
- * text should be replaced with the template in ngBindTemplate.
- * Unlike ngBind the ngBindTemplate can contain multiple `{{` `}}`
- * expressions. (This is required since some HTML elements
- * can not have SPAN elements such as TITLE, or OPTION to name a few.)
+ * text content should be replaced with the interpolation of the template
+ * in the `ngBindTemplate` attribute.
+ * Unlike `ngBind`, the `ngBindTemplate` can contain multiple `{{` `}}`
+ * expressions. This directive is needed since some HTML elements
+ * (such as TITLE and OPTION) cannot contain SPAN elements.
  *
  * @element ANY
  * @param {string} ngBindTemplate template of form