Update code_standard.rst (#587)

* Update code_standard.rst

* Update docs/developer/code_standard.rst

Co-authored-by: you-n-g <you-n-g@users.noreply.github.com>

Co-authored-by: you-n-g <you-n-g@users.noreply.github.com>

Author: demon143

docs/developer/code_standard.rst

@@ -12,6 +12,8 @@ Continuous Integration
 =================================
 Continuous Integration (CI) tools help you stick to the quality standards by running tests every time you push a new commit and reporting the results to a pull request. 
 
+When you submit a PR request, you can check whether your code passes the CI tests in the "check" section at the bottom of the web page.
+
 A common error is the mixed use of space and tab. You can fix the bug by inputing the following code in the command line.
 
 .. code-block:: python