Apply suggestions from code review (Partial)

Co-authored-by: Laurențiu Nicola <[email protected]>

src/driver.rs

@@ -454,14 +454,14 @@ impl DriverManager {
 
     /// Get an `Iterator` for all the drivers.
     ///
-    /// Warning: Adding or removing drivers while comsuming the
-    /// Iterator can have unexpected results.
+    /// Warning: Adding or removing drivers while consuming the
+    /// iterator is safe, but can produce less useful results.
     pub fn all() -> DriverIterator {
-        DriverIterator::new()
+        DriverIterator { current: 0 }
     }
 }
 
-/// Iterator for the registered `Driver`s in `DriverManager`
+/// Iterator for the registered [`Driver`]s in [`DriverManager`]
 pub struct DriverIterator {
     current: usize,
 }