Exft JS


https://docs-devel.sencha.com/extjs/..._with_cmd.html
and
https://docs-devel.sencha.com/extjs/..._with_zip.html

also minor typo for both pages: Sdk
This zip contains the Ext JS Sdk and --> This zip contains the Ext JS SDK and

also inconsistent usage :
Addons = add ons = add-on = Add-on

also inconsistent usage: ExtJS = Ext JS in https://docs-devel.sencha.com/extjs/...whats_new.html