fix typo (microsoft#93291)

hyun6 · web-flow · commit 3b155031dc5c · 2020-03-24T09:03:01.000-07:00
diff --git a/test/unit/README.md b/test/unit/README.md
@@ -4,7 +4,7 @@
 
 	./scripts/test.[sh|bat]
 
-All unit tests are run inside a electron-browser environment which access to DOM and Nodejs api. This is the closest to the enviroment in which VS Code itself ships. Notes:
+All unit tests are run inside a electron-browser environment which access to DOM and Nodejs api. This is the closest to the environment in which VS Code itself ships. Notes:
 
 - use the `--debug` to see an electron window with dev tools which allows for debugging
 - to run only a subset of tests use the `--run` or `--glob` options
