Fix markdown indentation.

Clippy gets upset about this now.

Author: thejpster

src/lib.rs

@@ -95,7 +95,7 @@ pub struct Api {
     ///
     /// * You cannot rename a file if it is currently open.
     /// * You cannot rename a file where the `old_path` and the `new_path` are
-    /// not on the same drive.
+    ///   not on the same drive.
     /// * Paths must confirm to the rules for the filesystem for the given drive.
     pub rename: extern "C" fn(old_path: FfiString, new_path: FfiString) -> Result<()>,
     /// Perform a special I/O control operation.