Update html5.md

docs/en/manuals/html5.md

@@ -54,7 +54,7 @@ You will be prompted to select a folder in which to create your application. Aft
   * WebGL - Microsoft has not completed work implementing the _WebGL_ API (see https://www.khronos.org/registry/webgl/specs/latest/). Therefore, it does not perform as well as other browsers.
   * Full screen - Full screen mode is unreliable in the browser.
 * Chrome
-  * Slow debug builds - In debug builds on HTML5 we verify all WebGL graphics calls to detect errors. This is unfortunately very slow when testing on Chrome. It is possible to disable this by setting the *Engine Arguments* field of *game.project* to `–verify-graphics-calls=false`.
+  * Slow debug builds - In debug builds on HTML5 we verify all WebGL graphics calls to detect errors. This is unfortunately very slow when testing on Chrome. It is possible to disable this by setting the *Engine Arguments* field of *game.project* to `--verify-graphics-calls=false`.
 
 ## Customizing HTML5 bundle