fix concurrencies in actions (#68)

* Update concurrencies
* Update gh-ci.yml

Author: IAlibay

.github/workflows/docs.yml

@@ -5,7 +5,7 @@ on:
       - master
 
 concurrency:
-  group: "${{ github.ref }}-${{ github.head_ref }}"
+  group: "${{ github.workflow }}-${{ github.ref }}"
   cancel-in-progress: true
 
 jobs:

.github/workflows/gh-ci.yml

@@ -12,7 +12,7 @@ on:
       - "master"
 
 concurrency:
-  group: "${{ github.ref }}-${{ github.head_ref }}"
+  group: "${{ github.workflow }}-${{ github.ref }}"
   cancel-in-progress: true
 
 jobs: