Merge pull request #2004 from python-pillow/radarhere-patch-1

Fixed typo

Makefile

@@ -28,7 +28,7 @@ doc:
 
 doccheck:
 	$(MAKE) -C docs html
-# Don't make our test rely on the links in the docs being up every single build.
+# Don't make our tests rely on the links in the docs being up every single build.
 # We don't control them.  But do check, and update them to the target of their redirects.
 	$(MAKE) -C docs linkcheck || true