docs: modify Toml to TOML (#1862)

packages/document/docs/en/config/tools/bundler-chain.mdx

@@ -177,7 +177,7 @@ For example, the `RULE.STYLUS` rule exists only when the Stylus plugin is regist
 | `RULE.MEDIA`  | Rule for `media`                                                          |
 | `RULE.VUE`    | Rule for `vue` (requires [Vue plugin](/plugins/list/plugin-vue))          |
 | `RULE.PUG`    | Rule for `pug` (requires [Pug plugin](/plugins/list/plugin-pug))          |
-| `RULE.TOML`   | Rule for `toml` (requires Toml plugin)                                    |
+| `RULE.TOML`   | Rule for `toml` (requires TOML plugin)                                    |
 | `RULE.SVELTE` | Rule for `svelte` (requires [Svelte plugin](/plugins/list/plugin-svelte)) |
 | `RULE.STYLUS` | Rule for `stylus` (requires [Stylus plugin](/plugins/list/plugin-stylus)) |
 
@@ -207,7 +207,7 @@ For example, the `RULE.STYLUS` rule exists only when the Stylus plugin is regist
 | `USE.RESOLVE_URL` | correspond to `resolve-url-loader`                                                    |
 | `USE.VUE`         | correspond to `vue-loader` (requires [Vue plugin](/plugins/list/plugin-vue))          |
 | `USE.SVGR`        | correspond to `svgr-loader` (requires [Svgr plugin](/plugins/list/plugin-svgr))       |
-| `USE.TOML`        | correspond to `toml-loader` (requires Toml plugin)                                    |
+| `USE.TOML`        | correspond to `toml-loader` (requires TOML plugin)                                    |
 | `USE.BABEL`       | correspond to `babel-loader` (requires [Babel plugin](/plugins/list/plugin-babel))    |
 | `USE.SVELTE`      | correspond to `svelte-loader` (requires [Svelte plugin](/plugins/list/plugin-svelte)) |
 | `USE.STYLUS`      | correspond to `stylus-loader` (requires [Stylus plugin](/plugins/list/plugin-stylus)) |