Update optimization-memory.md

docs/en/manuals/optimization-memory.md

@@ -24,5 +24,5 @@ Defold will allocate memory for components and resources once when a collection
 ## Optimize GUI node count
 Optimize GUI node counts by setting the max number of nodes in the GUI file to only what is needed. The `Current Nodes` field of the [GUI component properties](https://defold.com/manuals/gui/#gui-properties) will show the number of nodes used by the GUI component.
 
-:[HTML5 Optimizations](../shared/optimization-memory-html5)
+:[HTML5 Optimizations](../shared/optimization-memory-html5.md)