Summary

This PR fixes URL decoding problem in sidebar, reported in#1032. It builds on previous work in#1043, but with rebased and updated fix (just 1 line now).

What kind of change does this PR introduce? (check at least one)

• Bugfix

If changing the UI of default theme, please provide thebefore/after screenshot:

Does this PR introduce a breaking change? (check one)

• Yes
• No

If yes, please describe the impact and migration path for existing applications:

The PR fulfills these requirements:

• When resolving a specific issue, it's referenced in the PR's title (e.g.fix #xxx[,#xxx], where "xxx" is the issue number)
  fixsidebar active class and expand don't work as expect when use "space" in markdown filename #1032,closefix #1032 #1043

You have tested in the following browsers: (Providing a detailed version will be better.)

• Chrome
• Firefox
• Safari
• Edge
• IE

If adding anew feature, the PR's description includes:

• A convincing reason for adding this feature
• Related documents have been updated
• Related tests have been updated

To avoid wasting your time, it's best to open afeature request issue first and wait for approval before working on it.