nginx: fix typo in Dockerfile

Author: rmg

Dockerfile

@@ -5,7 +5,7 @@ RUN apk --no-cache add dnsmasq
 
 ADD entrypoint.sh nginx.conf ephemeral-npm.lua ephemeral-utils.lua /
 
-# Not port 80 because ephemeral-npm stnadardized on couchdb's port already
+# Not port 80 because ephemeral-npm standardized on couchdb's port already
 EXPOSE 4873
 
 ENTRYPOINT ["/entrypoint.sh"]