Fix GUID/PGID mismatch in 7 more app guides missed by the earlier pass

content/en/3.serveex/8.development/1.code-server.md

@@ -43,7 +43,7 @@ services:
     container_name: code-server
     environment:
       - PUID=${PUID}
-      - PGID=${GUID}
+      - PGID=${PGID}
       - TZ=Etc/UTC
       - HASHED_PASSWORD=${PW}
     volumes:
@@ -76,7 +76,7 @@ Choose a password and generate its hash:
 echo -n "yourpassword" | npx argon2-cli -e
 ```
 
-Save the result carefully. Find your PUID and GUID with:
+Save the result carefully. Find your PUID and PGID with:
 
 ```bash [Terminal]
 id yourusername
@@ -87,7 +87,7 @@ Fill in the `.env` file with the values you found, for example:
 ```properties [.env]
 PW='$argon2i$v=19$m=4096,t=3,p=1$wST5QhBgk2lu1ih4DMuxvg$LS1alrVdIWtvZHwnzCM1DUGg+5DTO3Dt1d5v9XtLws4'
 PUID=1000
-GUID=1000
+PGID=1000
 ```
 
 ::warning