fix(docs): Fixes SysGears logo in the README and SysGears name spelling (#6245)

**What's the problem this PR addresses?** <!-- Describe the rationale of your PR. --> <!-- Link all issues that it closes. (Closes/Resolves #xxxx.) --> At the moment the image to SysGears logo is broken, because the URL has changed to the `sysgears.com` domain from `cdn3.sysgears.com` subdomain. **How did you fix it?** <!-- A detailed description of your implementation. --> I have updated the URL to the logo to point at GitHub, so that Yarn weren't affected by external website changes. I also updated spelling of the SysGears name from Sysgears to SysGears, as the latter is more correct. **Checklist** <!--- Don't worry if you miss something, chores are automatically tested. --> <!--- This checklist exists to help you remember doing the chores when you submit a PR. --> <!--- Put an `x` in all the boxes that apply. --> - [x] I have read the [Contributing Guide](https://yarnpkg.com/advanced/contributing). <!-- See https://yarnpkg.com/advanced/contributing#preparing-your-pr-to-be-released for more details. --> <!-- Check with `yarn version check` and fix with `yarn version check -i` --> - [x] I have set the packages that need to be released for my changes to be effective. <!-- The "Testing chores" workflow validates that your PR follows our guidelines. --> <!-- If it doesn't pass, click on it to see details as to what your PR might be missing. --> - [x] I will check that all automated PR checks pass before the PR gets reviewed.

Author: larixer

README.md

@@ -74,11 +74,11 @@ Yarn is a modern package manager split into various packages. Its novel architec
  <tr>
  <td>
   <a href="https://sysgears.com/">
-  <img src="https://cdn3.sysgears.com/images/logo-128bacee32b1c70b00b6454397eeedc5.svg" width="140"/>
+  <img src="https://github.com/yarnpkg/berry/assets/1259926/c4d46d45-4f45-4b20-811e-d1f9d9e452dd" width="140"/>
   </a>
  </td>
  <td>
-  <b><a href="https://sysgears.com/">Sysgears</a></b> also sponsored time from very early in the 2.x development. In particular, their strong investment is the reason why Yarn 2 supports node_modules installs even better than it used to.
+  <b><a href="https://sysgears.com/">SysGears</a></b> also sponsored time from very early in the 2.x development. In particular, their strong investment is the reason why Yarn 2 supports node_modules installs even better than it used to.
  </td>
  </tr>
  <tr>