chore(typos): fix typos (#190)

Co-authored-by: stavares843 <stavares843@users.noreply.github.com>
Co-authored-by: ハン / Han <16288797+hannoeru@users.noreply.github.com>

.vitepress/theme/utils.ts

@@ -72,7 +72,7 @@ export function ensureEndingSlash(path: string): string {
 }
 
 /**
- * Remove `.md` or `.html` extention from the given path. It also converts
+ * Remove `.md` or `.html` extension from the given path. It also converts
  * `index` to slush.
  */
 export function removeExtension(path: string): string {