Updates resource_group dependency name for consistency (#18)

Signed-off-by: Sean Sundberg <[email protected]>

Author: Sean Sundberg

module.yaml

@@ -7,18 +7,18 @@ tags:
 versions:
 - platforms: []
   dependencies:
-    - id: resource-group
+    - id: resource_group
       refs:
         - source: github.com/cloud-native-toolkit/terraform-ibm-resource-group
           version: ">= 2.1.0"
   variables:
     - name: resource_group_id
       moduleRef:
-        id: resource-group
+        id: resource_group
         output: id
     - name: resource_group_name
       moduleRef:
-        id: resource-group
+        id: resource_group
         output: name
     - name: region
       scope: global