Fix typo in status badge.
-# [J2CL](http://j2cl.io) &middot; ![Build Status](https://github.com/google/j2cl/workflows/build%20and%20test/badge.svg)
+# [J2CL](http://j2cl.io) &middot; ![Build Status](https://github.com/google/j2cl/workflows/build%20and%20tests/badge.svg)
Seamless Java in JavaScript applications that tightly optimizes with
[Closure Compiler](https://github.com/google/closure-compiler)
