fix changelog page in docs (#6694)

CHANGES.md

@@ -86,7 +86,7 @@
     - The Asset Catalog now allows you to filter by repository to see a subset of your assets, and offers a “View in Asset Graph” button for quickly seeing software-defined assets in context.
     - The Asset page in Dagit has been split into two tabs, “Activity” and “Definition”.
     - Dagit now displays a warning on the Asset page if the most recent run including the asset’s step key failed without yielding a materialization, making it easier to jump to error logs.
-    - Dagit now gives you the option to view jobs with software-defined assets as an Asset Graph (default) or as an Op Graph, and displays asset<>op relationships more prominently when a single op yields multiple assets.
+    - Dagit now gives you the option to view jobs with software-defined assets as an Asset Graph (default) or as an Op Graph, and displays asset <-> op relationships more prominently when a single op yields multiple assets.
     - You can now include your assets in a repository with the use of an AssetGroup. Each repository can only have one AssetGroup, and it can provide a jumping off point for creating the jobs you plan on using from your assets.
       ```python
       from dagster import AssetGroup, repository, asset