docs(python): fix duplicated headings on layers and types API pages

bindings/python/docs/api/layers.md

@@ -2,29 +2,25 @@
 
 This page documents all layers in OpenDAL.
 
-## Layer
 ::: opendal.layers.Layer
     options:
       heading: "opendal.layers.Layer"
       heading_level: 2
       show_source: false
       show_bases: false
 
-## RetryLayer   
 ::: opendal.layers.RetryLayer
     options:
       heading: "opendal.layers.RetryLayer"
       heading_level: 2
       show_source: false
 
-## ConcurrentLimitLayer   
 ::: opendal.layers.ConcurrentLimitLayer
     options:
       heading: "opendal.layers.ConcurrentLimitLayer"
       heading_level: 2
       show_source: false
 
-## MimeGuessLayer   
 ::: opendal.layers.MimeGuessLayer
     options:
       heading: "opendal.layers.MimeGuessLayer"

bindings/python/docs/api/types.md

@@ -2,29 +2,25 @@
 
 This page documents all types in OpenDAL.
 
-## Entry
 ::: opendal.types.Entry
     options:
       heading: "opendal.types.Entry"
       heading_level: 2
       show_source: false
       show_bases: false
 
-## EntryMode   
 ::: opendal.types.EntryMode
     options:
       heading: "opendal.types.EntryMode"
       heading_level: 2
 
-## Metadata   
 ::: opendal.types.Metadata
     options:
       heading: "opendal.types.Metadata"
       heading_level: 2
       show_source: false
       show_bases: false
 
-## PresignedRequest   
 ::: opendal.types.PresignedRequest
     options:
       heading: "opendal.types.PresignedRequest"

bindings/python/docs/index.md

@@ -9,7 +9,7 @@ pip install opendal
 ## Local Usage
 Developer must set two required arguments to work with files locally:
 - `scheme`: which should be specified as `fs`
-- `root`: where OpenDAl considers the root of the directory for operations will be.
+- `root`: where OpenDAL considers the root of the directory for operations will be.
 
 For example in the following operator:
 `opendal.Operator("fs", root="/foo")`