Fix DOMImplementation IE versions (#3449)

https://technet.microsoft.com/en-us/sysinternals/ms535865(v=vs.110)

Author: markhalliwell

api/DOMImplementation.json

@@ -70,7 +70,7 @@
               "version_added": true
             },
             "ie": {
-              "version_added": "6"
+              "version_added": "9"
             },
             "opera": {
               "version_added": true
@@ -118,7 +118,7 @@
               "version_added": true
             },
             "ie": {
-              "version_added": "6"
+              "version_added": "9"
             },
             "opera": {
               "version_added": true
@@ -166,7 +166,7 @@
               "version_added": true
             },
             "ie": {
-              "version_added": "6",
+              "version_added": "9",
               "notes": "The <code>title</code> parameter is required, but can be empty string."
             },
             "opera": {