Updated Changelog (markdown)

Changelog.md

@@ -14,10 +14,10 @@ This change log tracks the releases on our [pilot server](https://recodex.mff.cu
 
 * Test limits were redesigned
   - Move to a separate page in the UI
-** Changed internally in the API (simple limits endpoints were removed)
+  - Changed internally in the API (simple limits endpoints were removed)
 * Hardware group selection was added to the limits page
-** Second hardware group for long-running exercises added
-** Limits constraints are now bound to selected hardware group
+  - Second hardware group for long-running exercises added
+  - Limits constraints are now bound to selected hardware group
 * Students can see stats table when enabled in group settings
 * Many bugs were fixed; number of submitted solutions reflects correct state (#153)