docs(minErr): add location/ipthprfx

docs/content/error/location/ipthprfx.ngdoc

@@ -0,0 +1,8 @@
+@ngdoc error
+@name $location:ipthprfx
+@fullName Invalid or Missing Path Prefix
+@description
+
+This error occurs when you configure the {@link api/ng.$location `$location`} service in the html5 mode, specify a base url for your application via `<base>` element and try to update the location with a path that doesn't match the base prefix.
+
+To resolve this issue, please check the base url specified via the `<base>` tag in the head of your main html document, as well as the url that you tried to set the location to.

docs/content/error/location/nopp.ngdoc

@@ -1,4 +0,0 @@
-@ngdoc error
-@name $location:nopp
-@fullName Missing Path Prefix
-@description

src/ng/location.js

@@ -97,7 +97,7 @@ function LocationHtml5Url(appBase, basePrefix) {
     matchUrl(url, parsed);
     var pathUrl = beginsWith(appBaseNoFile, url);
     if (!isString(pathUrl)) {
-      throw $locationMinErr('nopp', 'Invalid url "{0}", missing path prefix "{1}".', url, appBaseNoFile);
+      throw $locationMinErr('ipthprfx', 'Invalid url "{0}", missing path prefix "{1}".', url, appBaseNoFile);
     }
     matchAppUrl(pathUrl, parsed);
     extend(this, parsed);