chore: update documentation URLs to use workspace setting

Replace all docs.rs documentation URLs with documentation.workspace = true
to inherit from the workspace's docs.pezkuwichain.io URL.

pezbridges/primitives/test-utils/Cargo.toml

@@ -6,7 +6,7 @@ authors.workspace = true
 edition.workspace = true
 license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 repository.workspace = true
-documentation = "https://docs.rs/bp-test-utils"
+documentation.workspace = true
 homepage = { workspace = true }
 
 [lints]