fix: disable check of dead playground link (#296)

* disable check of dead playground link to fix CI

* explicitly use https instead of http

* replace twitter.com with x.com

* Revert "replace twitter.com with x.com"

This reverts commit 9428c91.

* Revert "explicitly use https instead of http"

This reverts commit 81f26c2.

* enable quiet mode as it's otherwise hard to find broken links in all the output logs

* ignore twitter/x links as it's broken see gaurav-nelson/github-action-markdown-link-check#182

.github/workflows/link-check.yml

@@ -15,6 +15,6 @@ jobs:
     - uses: actions/checkout@v3
     - uses: gaurav-nelson/github-action-markdown-link-check@v1
       with:
-        use-verbose-mode: 'yes'
+        use-quiet-mode: 'yes'
         config-file: '.github/workflows/mlc_config.json'
         folder-path: 'docs/'

.github/workflows/mlc_config.json

@@ -11,12 +11,18 @@
   ],
   "httpHeaders": [
     {
-      "urls": [
-        "https://crates.io"
-      ],
+      "urls": ["https://crates.io"],
       "headers": {
         "Accept": "text/html"
       }
     }
+  ],
+  "ignorePatterns": [
+    {
+      "pattern": "^https?://twitter.com"
+    },
+    {
+      "pattern": "^https?://x.com"
+    }
   ]
 }

docs/monthly-update/2022/05.md

@@ -19,6 +19,7 @@ a curated list of awesome projects related to ink!.
 
 ## Playground 🕹
 
+<!-- markdown-link-check-disable-next-line -->
 The ink! playground has been published at https://ink-playground.substrate.io!
 
 It's handy for a couple of things. For example: