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

Co-authored-by: Owen Mansel-Chan <62447351+owen-mc@users.noreply.github.com>

Author: MarkLee131

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

@@ -13,7 +13,7 @@ extensions:
       pack: codeql/java-all
       extensible: sinkModel
     data:
-      - ["javax.servlet", "ServletContext", True, "getResource", "(String)", "", "Argument[0]", "path-injection", "manual"]
+      - ["javax.servlet", "ServletContext", True, "getResource", "(String)", "", "Argument[0]", "path-injection[read]", "manual"]
       - ["javax.servlet", "ServletContext", True, "getResourceAsStream", "(String)", "", "Argument[0]", "path-injection[read]", "ai-manual"]
       - ["javax.servlet", "ServletContext", True, "getRequestDispatcher", "(String)", "", "Argument[0]", "url-forward", "manual"]
       - ["javax.servlet", "ServletRequest", True, "getRequestDispatcher", "(String)", "", "Argument[0]", "url-forward", "manual"]