Document Fix: (#376)

* Document Fix: 1.training tutorial refined. * refine document: 1.fix typos 2.replace text with tables * refact: sectionization and specify features-to-API Co-authored-by: ganler <jaway.liu@gmail.com>

Author: Gyx-One

docs/markdown/quick_start/training.md

@@ -41,7 +41,7 @@ For each model, HyperPose will save all the related files in the directory:
 
 The directory regarding training results are listed below: 
 
-```{list-table} Direcories for training results
+```{list-table} Directories for training results
 :header-rows: 1
 
 * - Folder Name