Fix image link for crying cat

[matthewyu01]

Cat image link doesn't work now:

meow/meow/frontend/src/components/Posts/Content.js

Line 20 in 2590fc1

src="https://emojipedia-us.s3.dualstack.us-west-1.amazonaws.com/thumbs/240/apple/155/crying-cat-face_1f63f.png"

We should change it to a working one