docs: revert accidental changes in TS config files docs (eslint#19336)

docs/src/use/command-line-interface.md

@@ -325,7 +325,7 @@ For example:
 
 {{ npx_tabs ({
     package: "eslint",
-    args: ["--config", "~/personal-eslintrc.js", "\\", "--resolve-plugins-relative-to", "/usr/local/lib/"]
+    args: ["--config", "~/personal-eslintrc.js", "--resolve-plugins-relative-to", "/usr/local/lib/"]
 }) }}
 
 ### Specify Rules and Plugins
@@ -384,7 +384,7 @@ To ignore rules in `.eslintrc` configuration files and only run rules specified
 
 {{ npx_tabs ({
     package: "eslint",
-    args: ["--rule", "\'quotes: [error, double]\'", "-no-eslintrc"],
+    args: ["--rule", "\'quotes: [error, double]\'", "--no-eslintrc"],
     comment: "Only apply rule from the command line"
 }) }}
 

docs/src/use/configure/configuration-files.md

@@ -521,19 +521,6 @@ For more information about using feature flags, see [Feature Flags](../../flags/
 
 ## TypeScript Configuration Files
 
-::: warning
-This feature is currently experimental and may change in future versions.
-:::
-
-You need to enable this feature through the `unstable_ts_config` feature flag:
-
-{{ npx_tabs({
-    package: "eslint",
-    args: ["--flag", "unstable_ts_config"]
-}) }}
-
-For more information about using feature flags, see [Feature Flags](../../flags/).
-
 For Deno and Bun, TypeScript configuration files are natively supported; for Node.js, you must install the optional dev dependency [`jiti`](https://github.com/unjs/jiti) in version 2.0.0 or later in your project (this dependency is not automatically installed by ESLint):
 
 {{ npm_tabs({