add paths for custom metadata show

paths.yaml

@@ -27,6 +27,9 @@
 "/accounts/{account_id}/custom_metadata/labels":
   get:
     "$ref": "./paths/custom_metadata_labels/index.yaml"
+"/accounts/{account_id}/custom_metadata_labels/{id}":
+  get:
+    "$ref": "./paths/custom_metadata_labels/show.yaml"
 "/accounts/{account_id}/invitations":
   get:
     "$ref": "./paths/invitations/index.yaml"

paths/custom_metadata_labels/show.yaml

@@ -0,0 +1,49 @@
+---
+summary: Get a single custom_metadata_label
+description: Get details of a single custom_metadata_label.
+operationId: custom_metadata_label/show
+tags:
+- CustomMetadataLabels
+parameters:
+- "$ref": "../../parameters.yaml#/X-PhraseApp-OTP"
+- "$ref": "../../parameters.yaml#/account_id"
+- "$ref": "../../parameters.yaml#/id"
+- description: specify the branch to use
+  example: my-feature-branch
+  name: branch
+  in: query
+  schema:
+    type: string
+responses:
+  '200':
+    description: OK
+    content:
+      application/json:
+        schema:
+          "$ref": "../../schemas/custom_metadata_label.yaml#/custom_metadata_label"
+    headers:
+      X-Rate-Limit-Limit:
+        "$ref": "../../headers.yaml#/X-Rate-Limit-Limit"
+      X-Rate-Limit-Remaining:
+        "$ref": "../../headers.yaml#/X-Rate-Limit-Remaining"
+      X-Rate-Limit-Reset:
+        "$ref": "../../headers.yaml#/X-Rate-Limit-Reset"
+  '400':
+    "$ref": "../../responses.yaml#/400"
+  '404':
+    "$ref": "../../responses.yaml#/404"
+  '429':
+    "$ref": "../../responses.yaml#/429"
+x-code-samples:
+- lang: Curl
+  source: |-
+    curl "https://api.phrase.com/v2/accounts/:account_id/custom_metadata_labels/:id?branch=my-feature-branch" \
+      -u USERNAME_OR_ACCESS_TOKEN
+- lang: CLI v2
+  source: |-
+    phrase custom_metadata_labels show \
+    --account_id <account_id> \
+    --id <id> \
+    --branch my-feature-branch \
+    --access_token <token>
+x-cli-version: '2.5'