Fixup HTTP_BASIC reference in docstring (#8314)

crates/uv-auth/src/credentials.rs

@@ -143,8 +143,8 @@ impl Credentials {
 
     /// Extract the [`Credentials`] from the environment, given a named source.
     ///
-    /// For example, given a name of `"pytorch"`, search for `UV_HTTP_BASIC_PYTORCH_USERNAME` and
-    /// `UV_HTTP_BASIC_PYTORCH_PASSWORD`.
+    /// For example, given a name of `"pytorch"`, search for `UV_INDEX_PYTORCH_USERNAME` and
+    /// `UV_INDEX_PYTORCH_PASSWORD`.
     pub fn from_env(name: &str) -> Option<Self> {
         let name = name.to_uppercase();
         let username = std::env::var(EnvVars::index_username(&name)).ok();