timings: Update name in Cargo.toml (solana-labs#3223)

#### Problem

The name and description fields in the new `solana-timings` crate come
from the sanitize crate.

#### Summary of changes

Update the names.

timings/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "solana-timings"
-description = "Solana Message Sanitization"
-documentation = "https://docs.rs/solana-sanitize"
+description = "Solana Execution Timings"
+documentation = "https://docs.rs/solana-timings"
 version = { workspace = true }
 authors = { workspace = true }
 repository = { workspace = true }