Bug 570992: Fix templates extension point documentation

The "filterPattern" attribute is used to filter templates by language
ID, not by build configuration ID.

Change-Id: Idd89fffc2ec3aefc3c1421b4cbbc7e1a19dbb7f3
diff --git a/core/org.eclipse.cdt.core/schema/templates.exsd b/core/org.eclipse.cdt.core/schema/templates.exsd
index 082ffd5..347820e 100644
--- a/core/org.eclipse.cdt.core/schema/templates.exsd
+++ b/core/org.eclipse.cdt.core/schema/templates.exsd
@@ -102,7 +102,7 @@
          <attribute name="filterPattern" type="string">
             <annotation>
                <documentation>
-                  filterPattern is a java.util.regex.Pattern format string which is used to match against build configuration ids. This is an optional attribute, if absent will all configurations will match.
+                  filterPattern is a java.util.regex.Pattern format string which is used to match against language identifiers. This is an optional attribute, if absent all languages will match.
                </documentation>
             </annotation>
          </attribute>