docs(mdbookignore): add manual line breaks

guide/src/format/configuration/renderers.md

@@ -298,9 +298,11 @@ The value can be any valid URI the browser should navigate to (e.g. `https://rus
 This will generate an HTML page which will automatically redirect to the given location.
 Note that the source location does not support `#` anchor redirects.
 
-### `[.mdbookignore]`
+### `.mdbookignore`
 
-You can use a `.mdbookignore` file to exclude files from the build process. The file is places in the `src` directory of your book and has the format known from [`.gitignore`](https://git-scm.com/docs/gitignore) files.
+You can use a `.mdbookignore` file to exclude files from the build process.
+The file is placed in the `src` directory of your book and has the same format as
+[`.gitignore`](https://git-scm.com/docs/gitignore) files.
 
 For example:
 ```