Upgrade Katex to v0.16.7

paige/node_modules/katex/src/mathMLTree.js

@@ -5,7 +5,7 @@
  * since we're mainly using MathML to improve accessibility, we don't manage
  * any of the styling state that the plain DOM nodes do.
  *
- * The `toNode` and `toMarkup` functions work simlarly to how they do in
+ * The `toNode` and `toMarkup` functions work similarly to how they do in
  * domTree.js, creating namespaced DOM nodes and HTML text markup respectively.
  */
 
@@ -166,7 +166,7 @@ export class TextNode implements MathDomNode {
 
     /**
      * Converts the text node into a string
-     * (representing the text iteself).
+     * (representing the text itself).
      */
     toText(): string {
         return this.text;