docs: update tutorial & demo content

Author: cotes2020

_posts/2019-08-08-text-and-typography.md

@@ -4,6 +4,7 @@ author: cotes
 date: 2019-08-08 11:33:00 +0800
 categories: [Blogging, Demo]
 tags: [typography]
+pin: true
 math: true
 mermaid: true
 image:
@@ -14,16 +15,15 @@ image:
 
 This post is to show Markdown syntax rendering on [**Chirpy**](https://github.com/cotes2020/jekyll-theme-chirpy/fork), you can also use it as an example of writing. Now, let's start looking at text and typography.
 
-## Titles
----
-# H1 - heading
+## Headings
+
+<h1 class="mt-5">H1 - heading</h1>
 
 <h2 data-toc-skip>H2 - heading</h2>
 
 <h3 data-toc-skip>H3 - heading</h3>
 
 <h4>H4 - heading</h4>
----
 
 ## Paragraph
 
@@ -122,7 +122,7 @@ fi;
 ```sass
 @import
   "colors/light-typography",
-  "colors/dark-typography"
+  "colors/dark-typography";
 ```
 {: file='_sass/jekyll-theme-chirpy.scss'}
 

_posts/2019-08-09-getting-started.md

@@ -71,7 +71,7 @@ Starting with version `4.1.0`, if you want to overwrite the SASS variables defin
 
 ### Customing Static Assets
 
-Static assets configuration was introduced in version `5.1.0`. The CDN of the static assets is defined by file `_data/assets/cross_origin.yml`{: .filepath }, and you can replace some of them according to the network conditions in the region where your website is published.
+Static assets configuration was introduced in version `5.1.0`. The CDN of the static assets is defined by file `_data/origin/cors.yml`{: .filepath }, and you can replace some of them according to the network conditions in the region where your website is published.
 
 Also, if you'd like to self-host the static assets, please refer to the [_chirpy-static-assets_](https://github.com/cotes2020/chirpy-static-assets#readme).