docs: add sponsor button (#3173)

This commit is contained in:
ylemkimon
2021-08-16 08:02:06 +09:00
committed by GitHub
parent 169e82e7a9
commit 7b280acb2a

1
.github/FUNDING.yml vendored Normal file
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@@ -0,0 +1 @@
open_collective: katex