docs: update build-optimizer command (#7276)

Followup to #7231

Author: filipesilva

docs/documentation/build.md

@@ -337,7 +337,7 @@ Note: service worker support is experimental and subject to change.
 <details>
   <summary>build-optimizer</summary>
   <p>
-    <code>--build-optimizer</code> (aliases: <code>-bo</code>)
+    <code>--build-optimizer</code>
   </p>
   <p>
     (Experimental) Enables @angular-devkit/build-optimizer optimizations when using `--aot`.