weex.require is deprecated but some document is not updated

[markzhai]

Such as

• https://weex-project.io/cn/references/weex-variable.html

[yundongbot]

Thanks for your reminder, I'll fix it right away.

[markzhai]

@DoranYun and this:

registerModule is typed as registerModules

• https://weex-project.io/cn/v-0.10/references/specs/js-framework-apis.html
• https://weex-project.io/v-0.10/references/specs/js-framework-apis.html
• https://weex-project.io/cn/references/advanced/extend-jsfm.html

[yundongbot]

I am sure these are right. You can register multiple modules with registerModules in JS Framework. But for iOS or Android, you need use registerModule to register module, only one can be registered at a time.

[yundongbot]

Fixed.#2373