docs: typo or invalid mark for Docusaurus

[juzhiyuan]

URL: https://apisix.apache.org/blog/2021/07/25/apachecon-asia

• We should load images from CDN
• Markdown invalid

URL: https://apisix.apache.org/blog/2021/06/17/Apache-APISIX-Dashboard-Access-Control-Bypass-Vulnerability-Announcement/

• <! --truncate --> invalid

URL: https://apisix.apache.org/blog/2021/10/27/APISIX%20Ingress

• Link invalid
  

cc @yzeng25

[yzeng25]

Hi,
the issues listed above are:

1. Missing Shuyang's profile picture
2. <! --truncate --> invalid
3. Invalid link in markdown file
4. Store pictures/images in CDN.

I solved 123 in #689, while problem 4 "Store pictures/images in CDN" would be a good first issue.

For clarification, is it expected to migrate all pictures/images to CDN, or just for pictures/images that would be added in the future, and we can leave previous pictures/images alone?

I can provide step-by-step instructions on the part, but migrating all pictures/images would be too much to handle for me. Thus, help from community is needed.

[yzeng25]

The steps of importing images to CDN is listed below:

1. Locate the images that need to be migrate to CDN

2. Download the images to your machine

3. Visit the CDN migration page https://markdown.apiseven.com/#/

4. Click either one of the following buttons to start uploading(single and multiple are both supported).
   

5. Click this button to continue uploading images, select images you need to upload,
   

6. After successfully uploaded, a link is generated for each image.
   

7. Copy the links and replace the origin links with these link.

[Ylikj]

@yzeng25 hi ,let me have a try, and I want to make sure that I need to replace all the pictures?

[juzhiyuan]

Yes

[yzeng25]

@yzeng25 hi ,let me have a try, and I want to make sure that I need to replace all the pictures?

Yes, thanks!

[juzhiyuan]

@Ylikj Any update here?

[Ylikj]

@juzhiyuan at pr#694,but there is something wrong, I will revise it tonight

[SkyeYoung]

Any update here?

[yzeng25]

I think this issue is solved long ago by #810. We should close it.
cc @juzhiyuan @bzp2010