docker-compose: rename couch to couchdb for consistency

docker-compose.test.yml

@@ -4,9 +4,9 @@
 # See https://docs.docker.com/compose/extends
 version: '3'
 services:
-  couch:
+  couchdb:
     volumes:
-      - './data/couch-test:/usr/local/var/lib/couchdb'
+      - './data/couchdb-test:/usr/local/var/lib/couchdb'
   inventaire:
     ports: [ "3009:3009" ]
     environment:

docker-compose.yml

@@ -1,6 +1,6 @@
 version: '3'
 services:
-  couch:
+  couchdb:
     image: couchdb:3.1
     ports:
       - "5984:5984"