Update entry-context.mdx

[cengizilhan]

multiple js config entry added

the technical document in which you wanted to determine the input and output names of different files was not included. That's why I added this.

[vercel[bot]]

@cengizilhan is attempting to deploy a commit to the Webpack Docs Team on Vercel.

A member of the Team first needs to authorize it.

[linux-foundation-easycla[bot]]

• :white_check_mark:login: cengizilhan / (4d81116b6ff0a96bc10e06569b6af0dfb7a00226)

The committers listed above are authorized under a signed CLA.

[chenxsan]

I believe it's already documented in https://webpack.js.org/concepts/entry-points/#multi-page-application

[cengizilhan]

@chenxsan thats right but "entry: { exampleFolder/pageOne: paths.src + '/index.js' }," you cant do it like that so you cant select the folder, only you can define the file.

[evenstensberg]

Continuing this in parent pr.