Fix typo in README (#13610)

Bennet Bo Fenner created 

Fixes a typo in the README which (I believe) was accidentally committed
in #13604

Release Notes:

- N/A

Change summary

README.md | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

Detailed changes

README.md 🔗 

@@ -1,5 +1,5 @@
-a# Zed
-sasdaasdasdasdasd
+# Zed
+
 [![CI](https://github.com/zed-industries/zed/actions/workflows/ci.yml/badge.svg)](https://github.com/zed-industries/zed/actions/workflows/ci.yml)
 
 Welcome to Zed, a high-performance, multiplayer code editor from the creators of [Atom](https://github.com/atom/atom) and [Tree-sitter](https://github.com/tree-sitter/tree-sitter).