chore: close naming

src/client-side-encryption/auto_encrypter.ts

@@ -375,7 +375,7 @@ export class AutoEncrypter {
   /**
    * Cleans up the `_mongocryptdClient`, if present.
    */
-  async teardown(): Promise<void> {
+  async close(): Promise<void> {
     await this._mongocryptdClient?.close();
   }
 

src/encrypter.ts

@@ -98,7 +98,7 @@ export class Encrypter {
   async close(client: MongoClient): Promise<void> {
     let error;
     try {
-      await this.autoEncrypter.teardown();
+      await this.autoEncrypter.close();
     } catch (autoEncrypterError) {
       error = autoEncrypterError;
     }