chore: fix PR template (#487)

* fix PR template

* subfolders of the log displayed on the web page

* fix code error

* add health check

* reformat with isort

* reformat with black

* update README

* fix bug && experience confusing

* reformat with black & update health check code

* reformat with isort

* reformat with black

* update README.md

* Removed duplicates in documentation and health_check && Upgraded code for filtering folders

* update docs

* reformat with black

.github/PULL_REQUEST_TEMPLATE.md

@@ -20,14 +20,12 @@
 
 ## How Has This Been Tested?
 <!---  Put an `x` in all the boxes that apply: --->
-- [ ] Pass the test by running: `pytest qlib/tests/test_all_pipeline.py` under upper directory of `qlib`.
 - [ ] If you are adding a new feature, test on your own test scripts.
 
 <!--- **ATTENTION**: If you are adding a new feature, please make sure your codes are **correctly tested**. If our test scripts do not cover your cases, please provide your own test scripts under the `tests` folder and test them. More information about test scripts can be found [here](https://docs.python.org/3/library/unittest.html#basic-example), or you could refer to those we provide under the `tests` folder. -->
 
 ## Screenshots of Test Results (if appropriate):
-1. Pipeline test:
-2. Your own tests:
+1. Your own tests:
 
 ## Types of changes
 <!--- What types of changes does your code introduce? Put an `x` in all the boxes that apply: -->