docs(webpack): present correct config file formats for inferred tasks (#27516)

We're showing `.cts` and `.mts` files as supported, but Webpack CLI will
not load them.

The language support is outlined here:
https://webpack.js.org/configuration/configuration-languages/#typescript

This PR removes those extensions to match what our plugin actually
infers from.

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## Current Behavior
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## Expected Behavior
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## Related Issue(s)
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Fixes #27438

docs/generated/packages/webpack/documents/overview.md

@@ -49,9 +49,7 @@ The `@nx/webpack` plugin will create a task for any project that has a Webpack c
 - `webpack.config.js`
 - `webpack.config.ts`
 - `webpack.config.mjs`
-- `webpack.config.mts`
 - `webpack.config.cjs`
-- `webpack.config.cts`
 
 ### View Inferred Tasks
 

docs/shared/packages/webpack/plugin-overview.md

@@ -49,9 +49,7 @@ The `@nx/webpack` plugin will create a task for any project that has a Webpack c
 - `webpack.config.js`
 - `webpack.config.ts`
 - `webpack.config.mjs`
-- `webpack.config.mts`
 - `webpack.config.cjs`
-- `webpack.config.cts`
 
 ### View Inferred Tasks