Removes trailing dash from generated slugs in markdown (#3044)

* fixed header slugs in markdown if ends with a dash

* added changeset

* removes trailing dash only if slug was created

* updated test

* updated change level from patch to minor

1 files changed, 5 insertions, 1 deletions

diff --git a/packages/markdown/remark/src/rehype-collect-headers.ts b/packages/markdown/remark/src/rehype-collect-headers.ts
index f8cedd0d5..9b9a43730 100644
--- a/packages/markdown/remark/src/rehype-collect-headers.ts
+++ b/packages/markdown/remark/src/rehype-collect-headers.ts
@@ -53,7 +53,11 @@ export default function createCollectHeaders() {
 							node as any
 						).value = `<${node.tagName} id={${node.properties.id}}>${raw}</${node.tagName}>`;
 					} else {
-						node.properties.id = slugger.slug(text);
+            let slug = slugger.slug(text);
+					
+					  if (slug.endsWith('-')) slug = slug.slice(0, -1);
+					
+					  node.properties.id = slug;
 					}
 				}