chore: update readme and format yml

Signed-off-by: neil <msg@nancode.cn>

README.md

@@ -5,17 +5,18 @@ Get the time in the specified time zone
 ## Example usage
 
 ```yaml
-      - name: Get Time
-        id: time
-        uses: boredland/get-time-action@master
-        with:
-          timeZone: UTC+8
-          format: 'YYYY-MM-DD-HH-mm-ss'
-      - name: Usage
-        env:
-          TIME: "${{ steps.time.outputs.time }}"
-        run: |
-          echo $TIME
+steps:
+  - name: Get Time
+    id: time
+    uses: nanzm/get-time-action@master
+    with:
+      timeZone: UTC+8
+      format: 'YYYY-MM-DD-HH-mm-ss'
+  - name: Usage
+    env:
+      TIME: "${{ steps.time.outputs.time }}"
+    run: |
+      echo $TIME
 ```
 
 ## Inputs

action.yml

@@ -1,21 +1,21 @@
-name: 'Get Timestamp Action'
-description: 'Get the time in the specified time zone'
-author: 'boredland'
+name: "Get Timestamp Action"
+description: "Get the time in the specified time zone"
+author: "boredland"
 branding:
   icon: arrow-right-circle
   color: gray-dark
 inputs:
   timeZone:
-    description: 'linux time zone'
+    description: "linux time zone"
     required: false
-    default: 'UTC'
+    default: "UTC"
   format:
-    description: 'timestamp format'
+    description: "timestamp format"
     required: false
-    default: 'YYYY-MM-DD HH:mm:ss'
+    default: "YYYY-MM-DD HH:mm:ss"
 outputs:
   time:
-    description: 'current time'
+    description: "current time"
     value: ${{ steps.time.outputs.value }}
 runs:
   using: "composite"