ci: remove ci/gh prefix from GHA workflows

.github/workflows/build.yml

@@ -1,4 +1,4 @@
-name: 'ci/gh: interop'
+name: 'interop'
 
 on:
   workflow_dispatch:

.github/workflows/docker-build.yml

@@ -1,4 +1,4 @@
-name: 'ci/gh: docker-build'
+name: 'docker-build'
 
 on:
   workflow_dispatch:

.github/workflows/gobuild.yml

@@ -1,4 +1,4 @@
-name: 'ci/gh: go build'
+name: 'go build'
 
 on:
   workflow_dispatch:

.github/workflows/golint.yml

@@ -1,4 +1,4 @@
-name: 'ci/gh: go lint'
+name: 'go lint'
 
 on:
   workflow_dispatch:

.github/workflows/gotest.yml

@@ -1,4 +1,4 @@
-name: 'ci/gh: go test'
+name: 'go test'
 
 on:
   workflow_dispatch:

.github/workflows/runner.yml

@@ -1,4 +1,4 @@
-name: 'ci/gh: choose runner'
+name: 'choose runner'
 
 on:
   workflow_call:

.github/workflows/sharness.yml

@@ -1,4 +1,4 @@
-name: 'ci/gh: sharness'
+name: 'sharness'
 
 on:
   workflow_dispatch: