JavaScript: Drop precision of AmbiguousIdAttribute to 'high'.

Author: Max Schaefer

change-notes/1.20/analysis-javascript.md

@@ -33,7 +33,7 @@
 
 | **Query**                                  | **Expected impact**          | **Change**                                                                   |
 |--------------------------------------------|------------------------------|------------------------------------------------------------------------------|
-| Ambiguous HTML id attribute                | Fewer false-positive results | This rule now treats templates more conservatively. |
+| Ambiguous HTML id attribute                | Fewer false-positive results | This rule now treats templates more conservatively. Its precision has been revised to 'high'. |
 | Client-side cross-site scripting           | More true-positive results, fewer false-positive results. | This rule now recognizes WinJS functions that are vulnerable to HTML injection. It no longer flags certain safe uses of jQuery, and recognizes custom sanitizers. |
 | Hard-coded credentials                     | Fewer false-positive results | This rule no longer flag the empty string as a hardcoded username. |
 | Insecure randomness | More results | This rule now flags insecure uses of `crypto.pseudoRandomBytes`. |

javascript/ql/src/DOM/AmbiguousIdAttribute.ql

@@ -8,7 +8,7 @@
  * @id js/duplicate-html-id
  * @tags maintainability
  *       correctness
- * @precision very-high
+ * @precision high
  */
 
 import javascript