Fix docs about filegator HOT 4 CLOSED

> [email protected] postinstall /var/www/html/filegator/node_modules/cypress
> node index.js --exec install

Installing Cypress (version: 3.8.3)

 ✖  Downloading Cypress
   → Cypress Version: 3.8.3
    Unzipping Cypress
    Finishing Installation
The Cypress App could not be downloaded.

Does your workplace require a proxy to be used to access the Internet? If so, you must configure the HTTP_PROXY environment variable before downloading Cypress. Read more: https://on.cypress.io/proxy-configuration

Otherwise, please check network connectivity and try again:

----------

URL: https://download.cypress.io/desktop/3.8.3?platform=linux&arch=ia32
Error: Failed downloading the Cypress binary.
Response code: 404
Response message: Not Found

----------

Platform: linux (Debian - 10)
Cypress Version: 3.8.3
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"arm"})

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] postinstall: `node index.js --exec install`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2021-03-23T03_06_14_396Z-debug.log