Fix tab formatting for JavaScript section in Bindings How-To (#4959)

Removed erroneous characters from example tab header (`%}}`)

Signed-off-by: James Pegg <jamescpegg@gmail.com>
Co-authored-by: Mark Fussell <markfussell@gmail.com>

Author: jamespegg

daprdocs/content/en/developing-applications/building-blocks/bindings/howto-bindings.md

@@ -242,7 +242,7 @@ func main() {
 
 {{% /tab %}}
 
-{{% tab "JavaScript%}}" %}}
+{{% tab "JavaScript" %}}
 
 ```javascript
 //dependencies