Fix typos

src/api.rs

@@ -214,15 +214,15 @@ impl<L: Language> SyntaxNode<L> {
     }
 
     /// Find a token in the subtree corresponding to this node, which covers the offset.
-    /// Precondition: offset must be withing node's range.
+    /// Precondition: offset must be within node's range.
     pub fn token_at_offset(&self, offset: TextSize) -> TokenAtOffset<SyntaxToken<L>> {
         self.raw.token_at_offset(offset).map(SyntaxToken::from)
     }
 
     /// Return the deepest node or token in the current subtree that fully
     /// contains the range. If the range is empty and is contained in two leaf
     /// nodes, either one can be returned. Precondition: range must be contained
-    /// withing the current node
+    /// within the current node
     pub fn covering_element(&self, range: TextRange) -> SyntaxElement<L> {
         NodeOrToken::from(self.raw.covering_element(range))
     }

src/cursor.rs

@@ -478,7 +478,7 @@ impl NodeData {
 
         match self.green() {
             NodeOrToken::Node(green) => {
-                // Child is root, so it ownes the green node. Steal it!
+                // Child is root, so it owns the green node. Steal it!
                 let child_green = match &child.green {
                     Green::Node { ptr } => unsafe { GreenNode::from_raw(ptr.get()).into() },
                     Green::Token { ptr } => unsafe { GreenToken::from_raw(*ptr).into() },