minor #6692 Update date.rst - Fixes typo (fdarre)

This PR was submitted for the master branch but it was merged into the 2.7 branch instead (closes #6692).

Discussion
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Update date.rst - Fixes typo

Typo fixed in line 100

Commits
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9a0bf73 Update date.rst - Fixes typo

Author: xabbuh

reference/forms/types/date.rst

@@ -88,7 +88,7 @@ make the following changes::
         // do not render as type="date", to avoid HTML5 date pickers
         'html5' => false,
 
-        // add a class that can eb selected in JavaScript
+        // add a class that can be selected in JavaScript
         'attr' => ['class' => 'js-datepicker'],
     ));