docs: Fix param function definition in helpers/html_helper.rst

Co-authored-by: kenjis <[email protected]>

Author: obozdag

user_guide_src/source/helpers/html_helper.rst

@@ -313,7 +313,7 @@ The following functions are available:
           <param name="hello" type="ref" value="world" class="test" />
         </object>
 
-.. php:function:: param($name = ''[, $value = ''[, $type = 'ref'[, $attributes = '']]])
+.. php:function:: param($name, $value[, $type = 'ref'[, $attributes = '']])
 
     :param  string  $name:       The name of the parameter
     :param  string  $value:      The value of the parameter