correct small typos in compose files

docker-compose.dem.ops.yml

@@ -201,7 +201,7 @@ services:
         - "traefik.docker.lbswarm=true"
         - "traefik.enable=true"
     networks:
-      - dem-extnet
+      - extnet
     configs:
       - source: shib-access-control-conf
         target: /etc/shibboleth/pass-ac.xml

docker-compose.emg.ops.yml

@@ -201,7 +201,7 @@ services:
         - "traefik.docker.lbswarm=true"
         - "traefik.enable=true"
     networks:
-      - emg-extnet
+      - extnet
     configs:
       - source: shib-access-control-conf
         target: /etc/shibboleth/pass-ac.xml

docker-compose.vhr18.ops.yml

@@ -201,7 +201,7 @@ services:
         - "traefik.docker.lbswarm=true"
         - "traefik.enable=true"
     networks:
-      - vhr18-extnet
+      - extnet
     configs:
       - source: shib-access-control-conf
         target: /etc/shibboleth/pass-ac.xml
@@ -213,7 +213,7 @@ services:
         target: /etc/httpd/conf.d/shib.conf
       - source: shib-attribute-map
         target: /etc/shibboleth/attribute-map.xml
-      - source: shib-idp-metadata
+      - source: idp-metadata
         target: /etc/shibboleth/idp-metadata.xml
       - source: shib-index
         target: /var/www/html/secure/index.html
@@ -246,7 +246,7 @@ configs:
     file: ./config/shibboleth/shibd.logger
   shib-index:
     file: ./config/shibboleth/index.html
-  shib-idp-metadata:
+  idp-metadata:
     external: true
 secrets:
   VHR18_SHIB_CERT: