Update CHANGES.md

Author: ggetz

CHANGES.md

@@ -12,7 +12,7 @@
 - Improved performance and reduced memory usage of `Event` class. [#12896](https://github.com/CesiumGS/cesium/pull/12896)
 - Fixes vertical misalignment of glyphs in labels with small fonts [#8474](https://github.com/CesiumGS/cesium/issues/8474)
 - Prevent runtime errors for certain forms of invalid PNTS files [#12872](https://github.com/CesiumGS/cesium/issues/12872)
-- Fixes issue where multiple instances of a Gaussian splat tileset would transform tile positions incorrectly and render out of position. [12795](https://github.com/CesiumGS/cesium/issues/12795)
+- Fixes issue where multiple instances of a Gaussian splat tileset would transform tile positions incorrectly and render out of position. [#12795](https://github.com/CesiumGS/cesium/issues/12795)
 
 #### Additions :tada: