7903800: apidiff: fix test docs and Makefile

Reviewed-by: iris

Author: jonathan-gibbons

make/Makefile

@@ -53,7 +53,6 @@ clean:
 sanity:
 	@echo "JDKHOME               = $(JDKHOME)"
 	@echo "JUNIT_JAR             = $(JUNIT_JAR)"
-	@echo "JCOMMANDER_JAR        = $(JCOMMANDER_JAR)"
 	@echo "JAVADIFFUTILS_JAR     = $(JAVADIFFUTILS_JAR)"
 	@echo "JAVADIFFUTILS_LICENSE = $(JAVADIFFUTILS_LICENSE)"
 	@echo "DAISYDIFF_JAR         = $(DAISYDIFF_JAR)"

make/README.md

@@ -10,7 +10,7 @@ _apidiff_ has various external dependencies:
 * _JDK_: must be at least JDK 17
 * _Java Diff Utils_
 * _Daisy Diff_
-* _TestNG_ and _JCommander_ (for testing only)
+* _JUnit_ (for testing only)
 
 ## Using `make/build.sh`
 
@@ -34,7 +34,7 @@ The script supports the following build scenarios:
 
 * Use local copies of the dependencies on the same machine.
   The details can be specified in an alternate `version-numbers` file,
-  or you can bypas the script entirely and invoke `make` directly.
+  or you can bypass the script entirely and invoke `make` directly.
 
 For more details, see the comments in `make/build.sh` and use the `--help`
 option when running the script.
@@ -48,7 +48,7 @@ The makefile provides the following targets:
 
 * `test`: run tests
 
-    Requires `TESTNG_JAR` and `JCOMMANDER_JAR` to be set.
+    Requires `JUNIT_JAR` to be set.
 
 * `clean`: delete the `build` directory and its contents