fix: mobile navigation should show deepest breadcrumb instead of outermost #1493
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Motivation
Fixed #1338
Have you read the Contributing Guidelines on pull requests?
Yes
Test Plan
Test with
testing-library
's website.Live preview in https://hongarc.github.io/testing-library-docs/
docs
in nav-sitetoggle of nav
click one item inDOM Testing Library
Before:
![image](https://user-images.githubusercontent.com/19208123/57977372-5334f600-7a21-11e9-8223-f5a619c54c35.png)
After:
![image](https://user-images.githubusercontent.com/19208123/57977375-62b43f00-7a21-11e9-9d62-f20a81c51f78.png)
It shows subcategory's title if it is a subcategory
and keep
![image](https://user-images.githubusercontent.com/19208123/57977381-78296900-7a21-11e9-9ef6-b653ee7b0f46.png)
category
's title if it is a category