Use standard name for checkout step in Go release workflows

All the other template workflows use the name "Checkout repository" for their checkout step, so this one should as well
for consistency.

Author: per1234

workflow-templates/dependabot/workflow-template-copies/.github/workflows/publish-go-nightly-task.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - name: checkout
+      - name: Checkout repository
         uses: actions/checkout@v1
         with:
           fetch-depth: 0
@@ -41,7 +41,7 @@ jobs:
     needs: create-nightly-artifacts
 
     steps:
-      - name: Checkout
+      - name: Checkout repository
         uses: actions/checkout@v2
 
       - name: Download artifacts

workflow-templates/dependabot/workflow-template-copies/.github/workflows/release-go-task.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - name: Checkout
+      - name: Checkout repository
         uses: actions/checkout@v1
         with:
           fetch-depth: 0
@@ -44,7 +44,7 @@ jobs:
     needs: create-release-artifacts
 
     steps:
-      - name: Checkout
+      - name: Checkout repository
         uses: actions/checkout@v2
 
       - name: Download artifacts
@@ -104,7 +104,7 @@ jobs:
     needs: notarize-macos
 
     steps:
-      - name: Checkout
+      - name: Checkout repository
         uses: actions/checkout@v2
 
       - name: Download artifact

workflow-templates/publish-go-nightly-task.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - name: checkout
+      - name: Checkout repository
         uses: actions/checkout@v1
         with:
           fetch-depth: 0
@@ -41,7 +41,7 @@ jobs:
     needs: create-nightly-artifacts
 
     steps:
-      - name: Checkout
+      - name: Checkout repository
         uses: actions/checkout@v2
 
       - name: Download artifacts

workflow-templates/release-go-task.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - name: Checkout
+      - name: Checkout repository
         uses: actions/checkout@v1
         with:
           fetch-depth: 0
@@ -44,7 +44,7 @@ jobs:
     needs: create-release-artifacts
 
     steps:
-      - name: Checkout
+      - name: Checkout repository
         uses: actions/checkout@v2
 
       - name: Download artifacts
@@ -104,7 +104,7 @@ jobs:
     needs: notarize-macos
 
     steps:
-      - name: Checkout
+      - name: Checkout repository
         uses: actions/checkout@v2
 
       - name: Download artifact