Merge pull request #1835 from Kobzol/rustlings-url

Update rustlings homepage URL

Author: marcoieni

repos/rust-lang/rustlings.toml

@@ -1,7 +1,7 @@
 org = "rust-lang"
 name = "rustlings"
 description = ":crab: Small exercises to get you used to reading and writing Rust code!"
-homepage = "https://rustlings.cool"
+homepage = "https://rustlings.rust-lang.org"
 bots = []
 
 [access.teams]