fix: Sample code in README.md (#546)

* fix: `nodetail` code sample

* Upload new sample image

* Revert "Upload new sample image"

This reverts commit ffadf68.

* Match sample code with existing image

* Use correct webhook field

* Fix syntax in sample code

* Use dynamic code in Markdown sample

* Use single variable for release link

Co-authored-by: Takakazu Fu <git@sarisia.cc>

* Use single variable for release link

Co-authored-by: Takakazu Fu <git@sarisia.cc>

---------

Co-authored-by: Takakazu Fu <git@sarisia.cc>

README.md

@@ -51,11 +51,13 @@ Post GitHub Actions status to Discord as an beautiful embed
 ```yaml
 - uses: sarisia/actions-status-discord@v1
   if: always()
-  env:
-    DISCORD_WEBHOOK: ${{ secrets.DISCORD_WEBHOOK }}
   with:
+    webhook: ${{ secrets.DISCORD_WEBHOOK }}
     nodetail: true
-    title: "We did it!"
+    title: "New version of `software` is ready!"
+    description: |
+      Version `${{ github.event.release.tag_name }}`
+      Click [here](${{ github.event.release.html_url }}) to download!
     color: 0xff91a4
 ```
 
@@ -128,10 +130,11 @@ Some fields support markdown syntax.
   with:
     webhook: ${{ secrets.DISCORD_WEBHOOK }}
     nodetail: true
-    title: New version of `software` is ready!
+    title: "New version of `software` is ready!"
     description: |
-      Version `1.2.3-alpha`
-      Click [here](https://github.com/sarisia/actions-status-discord) to download!
+      Version `${{ github.event.release.tag_name }}`
+      Click [here](${{ github.event.release.html_url }}) to download!
+    color: 0xff91a4
 ```
 
 ![image](https://user-images.githubusercontent.com/33576079/212482315-52429bbd-b7b9-456a-8ee8-ee26aa2a0fb1.png)