docs(README): incorrect image name causes README to fail to refer to

[Duslia]

What type of PR is this?

docs

Check the PR title.

• This PR title match the format: <type>(optional scope): <description>
• The description of this PR title is user-oriented and clear enough for others to understand.

(Optional) Translate the PR title into Chinese.

(Optional) More detail description for this PR(en: English/zh: Chinese).

en: incorrect image name causes README to fail to refer to
zh(optional): 错误的图片名称导致 README 引用失败

Which issue(s) this PR fixes:

[codecov]

Codecov Report

Base: 66.13% // Head: 66.13% // No change to project coverage 👍

Coverage data is based on head (ab06e1f) compared to base (b0bcce3).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #350   +/-   ##
========================================
  Coverage    66.13%   66.13%           
========================================
  Files           85       85           
  Lines         8319     8319           
========================================
  Hits          5502     5502           
  Misses        2458     2458           
  Partials       359      359           

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