Remove spurious whitespace at end of line

Note: I've added a newline at the end of the file too as that's what I
see in the other file but I don't think anyone will really care about
that.

docker-compose.dev.yml

@@ -1,12 +1,12 @@
 version: '3.4'
 
 services:
-  identifier:    
+  identifier:
     restart: "no"
   dispatcher:
     restart: "no"
   triplestore:
-    ports: 
+    ports:
       - "8890:8890"
     restart: "no"
   db:
@@ -34,4 +34,4 @@ services:
       - "80:80"
     restart: "no"
   frontend:
-    restart: "no"
+    restart: "no"