📝(doc) Fix commands in docker compose section

Corrected the commands in step 1 Signed-off-by: Moritz Schlarb <schlarbm@uni-mainz.de>

Author: moschlar

docs/installation/compose.md

@@ -31,11 +31,12 @@ For older versions of Docker Engine that do not include Docker Compose:
 
 ```bash
 mkdir -p docs/env.d
+cd docs
 curl -o compose.yaml https://raw.githubusercontent.com/suitenumerique/docs/refs/heads/main/docs/examples/compose/compose.yaml
 curl -o env.d/common https://raw.githubusercontent.com/suitenumerique/docs/refs/heads/main/env.d/production.dist/common
 curl -o env.d/backend https://raw.githubusercontent.com/suitenumerique/docs/refs/heads/main/env.d/production.dist/backend
 curl -o env.d/yprovider https://raw.githubusercontent.com/suitenumerique/docs/refs/heads/main/env.d/production.dist/yprovider
-curl -o env.d/common https://raw.githubusercontent.com/suitenumerique/docs/refs/heads/main/env.d/production.dist/postgresql
+curl -o env.d/postgresql https://raw.githubusercontent.com/suitenumerique/docs/refs/heads/main/env.d/production.dist/postgresql
 ```
 
 ## Step 2: Configuration