Address more review feedback.

Author: Max Schaefer

java/ql/lib/ext/org.apache.hadoop.fs.model.yml

@@ -3,6 +3,7 @@ extensions:
       pack: codeql/java-all
       extensible: summaryModel
     data:
+      - ["org.apache.hadoop.fs", "FileSystem", True, "makeQualified", "(Path)", "", "Argument[0]", "ReturnValue", "taint", "ai-manual"]
       - ["org.apache.hadoop.fs", "Path", True, "Path", "(Path,Path)", "", "Argument[0]", "Argument[this]", "taint", "ai-manual"]
       - ["org.apache.hadoop.fs", "Path", True, "Path", "(Path,Path)", "", "Argument[1]", "Argument[this]", "taint", "ai-manual"]
       - ["org.apache.hadoop.fs", "Path", True, "Path", "(Path,String)", "", "Argument[0]", "Argument[this]", "taint", "ai-manual"]
@@ -17,6 +18,5 @@ extensions:
       pack: codeql/java-all
       extensible: sinkModel
     data:
-      - ["org.apache.hadoop.fs", "FileSystem", True, "makeQualified", "(Path)", "", "Argument[0]", "path-injection", "ai-manual"]
       - ["org.apache.hadoop.fs", "FileSystem", True, "rename", "(Path,Path)", "", "Argument[0]", "path-injection", "ai-manual"]
       - ["org.apache.hadoop.fs", "FileSystem", True, "rename", "(Path,Path)", "", "Argument[1]", "path-injection", "ai-manual"]