Fix typo: environemnt -> environment (#159)

Signed-off-by: Aidan Fitzgerald <[email protected]>

Author: Aidan Fitzgerald

Dockerfile

@@ -15,7 +15,7 @@ COPY . .
 # directly which should be fast as it is slow because it populates its own cache every time.
 RUN yarn && yarn task build:server:binary
 
-# We deploy with ubuntu so that devs have a familiar environemnt.
+# We deploy with ubuntu so that devs have a familiar environment.
 FROM ubuntu:18.10
 WORKDIR /root/project
 COPY --from=0 /src/packages/server/cli-linux-x64 /usr/local/bin/code-server