Java: Fixup test

java/ql/test/library-tests/dataflow/threat-models/Test.java

@@ -59,7 +59,7 @@ class Test {
   }
 
   public void M5(Statement handle) throws Exception {
-    // Only a source if "commandargs" is a selected threat model.
+    // Only a source if "stdin" is a selected threat model.
     byte[] data = new byte[1024];
     System.in.read(data);
 

java/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest5.ext.yml

@@ -5,7 +5,7 @@ extensions:
       extensible: threatModelConfiguration
     data:
       - ["environment", true, 0]
-      - ["commandargs", true, 0]
+      - ["stdin", true, 0]
 
   - addsTo:
       pack: codeql/java-all