Revert trailing punctuation lint

Author: janhohenheim

.markdownlint.json

@@ -2,6 +2,9 @@
     "line-length": {
         "line_length": 160,
         "code_blocks": false
+    },
+    "no-trailing-punctuation": {
+        "punctuation": ".,;:。，；："
     }
 }