Fix code review mistake

Author: atorralba

java/ql/lib/ext/javax.servlet.model.yml

@@ -9,9 +9,13 @@ extensions:
       - ["javax.servlet", "ServletRequest", False, "getParameterNames", "()", "", "ReturnValue", "remote", "manual"]
       - ["javax.servlet", "ServletRequest", False, "getParameterValues", "(String)", "", "ReturnValue", "remote", "manual"]
       - ["javax.servlet", "ServletRequest", False, "getReader", "()", "", "ReturnValue", "remote", "manual"]
-      - ["javax.servlet", "ServletRequest", False, "getRealPath", "(String)", "", "ReturnValue", "remote", "ai-manual"]
   - addsTo:
       pack: codeql/java-all
       extensible: sinkModel
     data:
       - ["javax.servlet", "ServletContext", True, "getResourceAsStream", "(String)", "", "Argument[0]", "path-injection", "ai-manual"]
+  - addsTo:
+      pack: codeql/java-all
+      extensible: summaryModel
+    data:
+      - ["javax.servlet", "ServletRequest", False, "getRealPath", "(String)", "", "Argument[0]", "ReturnValue", "taint", "ai-manual"]