docs: small grammar change (#6609)

Small grammar change

Small grammar fix in the $ symbol section about the optimizer.

packages/docs/src/routes/docs/(qwik)/advanced/dollar/index.mdx

@@ -27,7 +27,7 @@ The `$` suffix is used to signal both the optimizer and the developer when this
 
 ## Compiler-time implications
 
-[Optimizer](../optimizer/index.mdx) runs as a Vite plugin during bundling. The purpose of the Optimizer is to break up the application into many small lazy-loadable chunks. The Optimizer moves expressions (usually functions) into new files and leaves behind a reference pointing to where the expression was moved from.
+The [optimizer](../optimizer/index.mdx) runs as a Vite plugin during bundling. The purpose of the Optimizer is to break up the application into many small lazy-loadable chunks. The Optimizer moves expressions (usually functions) into new files and leaves behind a reference pointing to where the expression was moved from.
 
 The `$` tells the optimizer which functions to extract into a separate file and which ones to leave untouched. The optimizer does not keep an internal list of magic functions, instead, it solely relies on the `$` suffix to know which functions to transform. The system is extendable and developers can create their own `$` functions, such as `myCustomFunction$()`.