Oops, fix YAML + bash mistake

Okay so you know how in 3f07933f7a I switched the newline stuff here?

Yeah, right, I forgot, newlines are significant in bash :p I forgot this because I've never used them inside a `bash -c` invocation, but like, of course

Now, I'm still using `|` for clarity and reduced dependence on magic, but getting my lines right :p

deploy/playbooks/deploy.yml

@@ -70,9 +70,7 @@
       # running. So, these two copies of node_modules *should* just stay
       # permanently the way they are forever, so linking shoouulld be safe 🤞
       command: |
-        bash -c "
-          ln -s $(realpath /srv/impress-2020/current/node_modules)
-          {{ remote_app_root }}/node_modules"
+        bash -c "ln -s $(realpath /srv/impress-2020/current/node_modules) {{ remote_app_root }}/node_modules"
       when: "can_reuse_node_modules_when_successful.rc == 0"
 
     - name: Run `yarn install` to install dependencies in new remote folder