Update script.md (#319)

* update physics

* update input

* update

* update code sharing in getting-help.md

* Export Compliance

* update on file i/o

* pi / 4

* inputs

* forum url

* read only user

* html5 gamepad

* sdk api update

* update

* image properties

* update editor

* defold sdk update

* animation updates

* animation fix

* run as admin

* update bob

* update about AndroidX support

* software render

* linux-faq.md update

* 4.28.2021 updates

* Basis Universal format

* sound & mesh

* gamepad event mapping

* admob url

* Minor edit to building blocks intro text

* update gamepad & ios

* project settings

* libffi version

* scaling

* image compression

* update gamepads

* increase memory

* caching assets

* update 2021/10/6

* update 2021/10/16
blend-modes.md

* update 2021/11/12

* allow dynamic transforms update

* Bundle update

* update faq

* bullet & bob

* script properties update

* editor-styling

* build server url

* editor templates

* spine extension update

* Fix typo in the "optimizations" word in Chinese docs

* Update to material.md - Constants buffers

* Verify Graphics Calls

* H5 parameters

* OpenJDK downloads

* cn update corresponds to [pull 259](https://github.com/defold/doc/pull/259)

* application security

* porting guidelines

* update for 8f1651f

* cn update for 094bf6f

* cn update for 20fdfc5 & 6263317

* cn update for 7/19/2022

* title

* profiling update

* update editor.md

* update bob.md

* update shortcuts

* update fixed update note

* Update properties.md

* Update material.md

* Updates links

* Update bob help with the latest info

* camera & renderer

* Updated android keystore info zh_cn

* bundling.md release vs debug zh_cn

* update bob.md & gui-clipping.md

* contentless bundle

* consoles update

* model animation link

* gamepad & faq

* remove a camera lib

* font shadow render mode fix

* updates about app-manifest and others

* Update script.md

docs/zh/manuals/script.md

@@ -64,7 +64,7 @@ Defold 把 Lua 脚本作为引擎生命周期的一部分来执行并且向脚
   ```
 
 `fixed_update(self, dt)`
-: 不基于 update 的固定帧率更新. `dt` 是从上一帧到这一帧的时差. 主要用于对物理对象进行一个稳定的交互模拟的情形. 需要在 *game.project* 文件里设置 `physics.use_fixed_timestep`.
+: 不基于 update 的固定帧率更新. `dt` 是从上一帧到这一帧的时差. 当 `engine.fixed_update_frequency` 开启 (!= 0) 时该函数会被调用. 当 *game.project* 文件里开启了 `physics.use_fixed_timestep` 的时候, 该函数可以用于对物理对象进行一个稳定的模拟.
 
   ```lua
   function fixed_update(self, dt)