Fix typo in README.md "my_new_env" -> "my_new_environment"

pprzetacznik · web-flow · commit d0b91caf36d5 · 2019-01-12T21:45:02.000+01:00
diff --git a/README.md b/README.md
@@ -123,7 +123,7 @@ iex> Boyle.list()
 
 Activate virtual environment
 ```Elixir
-iex> Boyle.activate("my_new_env")
+iex> Boyle.activate("my_new_environment")
 :ok
 ```
 
