update docs

Author: michael-yin

docs/source/context.md

@@ -13,8 +13,6 @@ def get_context_data(self, **kwargs):
 
 Then you can get the `var2` in the component template via `{{ var2 }}`, just like other variables.
 
-## Special variables in the component context
-
-### Self
+## Self
 
 `self` points to the component instance itself, since each component has its own context, so each time the component is rendered, `self` is overwritten, and this would not cause any conflict.

docs/source/templates.md

@@ -4,11 +4,11 @@
 
 You can use `template` variable to define the template inline.
 
-### Template file
+## Template file
 
 To use an external template file, set the `template_name` variable
 
-### Dynamic template
+## Dynamic template
 
 You can use `get_template_names` method to do dynamic template selection.