[MINOR] fix broken link (#4847)

### What changes were proposed in this pull request?

Remove single space to fix broken link

### Why are the changes needed?

So link works.

Fix: # N/A

### Does this PR introduce _any_ user-facing change?

N/A

### How was this patch tested?

N/A

docs/how-to-build.md

@@ -266,6 +266,6 @@ Access [http://localhost:8090](http://localhost:8090)
 
 Building the Gravitino project compiles the necessary components, and starting the server allows you to access the application in your browser.
 
-Please refer to [CONTRIBUTING.md] (https://github.com/apache/gravitino/blob/main/CONTRIBUTING.md) for instructions on running the project using VSCode or IntelliJ on Windows.
+Please refer to [CONTRIBUTING.md](https://github.com/apache/gravitino/blob/main/CONTRIBUTING.md) for instructions on running the project using VSCode or IntelliJ on Windows.
 
 <img src="https://analytics.apache.org/matomo.php?idsite=62&rec=1&bots=1&action_name=HowToBuild" alt="" />