Update Turndown to v7.2.1

Remove OTA fork as it provides no benefit.
- List item spacing: one or two spaces before a bullet/number render identically in markdown.
- Anchors with block elements: both implementations yield unsatisfactory results. With no clear winner, keeping a fork is unnecessary.

Author: Ndpnt

package-lock.json

@@ -53,7 +53,6 @@
     "@accordproject/concerto-util": "^3.24.0",
     "@accordproject/markdown-cicero": "^0.16.26",
     "@accordproject/markdown-pdf": "^0.16.25",
-    "@opentermsarchive/turndown": "^7.1.3",
     "abort-controller": "^3.0.0",
     "ajv": "^8.17.1",
     "ajv-formats": "^3.0.1",
@@ -98,6 +97,7 @@
     "simple-git": "^3.28.0",
     "swagger-jsdoc": "^6.2.8",
     "swagger-ui-express": "^5.0.1",
+    "turndown": "^7.2.1",
     "winston": "^3.17.0",
     "winston-mail": "^2.0.0"
   },

package.json

@@ -1,7 +1,7 @@
 import ciceroMark from '@accordproject/markdown-cicero';
 import mardownPdf from '@accordproject/markdown-pdf';
-import TurndownService from '@opentermsarchive/turndown';
 import turndownPluginGithubFlavouredMarkdown from 'joplin-turndown-plugin-gfm';
+import TurndownService from 'turndown';
 
 const turndownService = new TurndownService();