docs(README): move sponsor button

Author: XadillaX

README.md

@@ -2,6 +2,10 @@
   <img height="200" src="https://github.com/XadillaX/vscode-language-viml/raw/master/assets/README.png" />
 </p>
 
+<p align="center">
+  <a href="https://github.com/sponsors/XadillaX"><img src="https://github.com/XadillaX/vscode-language-viml/raw/master/assets/github_sponsor_btn.svg" /></a>
+</p>
+
 <p align="center">
   <a href="https://marketplace.visualstudio.com/items?itemName=XadillaX.viml">
     <img src="https://vsmarketplacebadges.dev/version-short/XadillaX.viml.svg.?style=for-the-badge&colorA=FF7800&colorB=CC5600&label=VS%20MARKETPLACE" />
@@ -21,8 +25,6 @@
 
 [**VimL**](https://en.wikipedia.org/wiki/Vim_(text_editor)#Vim_script) (Also known as **Vim Language**, **VimScript**) support for [VSCode](https://code.visualstudio.com/).
 
-[![](assets/github_sponsor_btn.svg)](https://github.com/sponsors/XadillaX)
-
 Syntax Highlighting is synchronized from [Atom VimL](https://github.com/Alhadis/language-viml) with ❤ by [vscode-grammar-update-tool](https://github.com/XadillaX/vscode-update-grammar-tool).
 
 Language Server Protocol depends on [vim-language-server](https://github.com/iamcco/vim-language-server).