docs: document apiEndpoint over servicePath (googleapis#520)

Author: JustinBeckwith

handwritten/bigtable/src/v2/bigtable_client.js

@@ -51,7 +51,7 @@ class BigtableClient {
    *     your project ID will be detected automatically.
    * @param {function} [options.promise] - Custom promise module to use instead
    *     of native Promises.
-   * @param {string} [options.servicePath] - The domain name of the
+   * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
   constructor(opts) {

handwritten/bigtable/src/v2/bigtable_instance_admin_client.js

@@ -54,7 +54,7 @@ class BigtableInstanceAdminClient {
    *     your project ID will be detected automatically.
    * @param {function} [options.promise] - Custom promise module to use instead
    *     of native Promises.
-   * @param {string} [options.servicePath] - The domain name of the
+   * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
   constructor(opts) {

handwritten/bigtable/src/v2/bigtable_table_admin_client.js

@@ -56,7 +56,7 @@ class BigtableTableAdminClient {
    *     your project ID will be detected automatically.
    * @param {function} [options.promise] - Custom promise module to use instead
    *     of native Promises.
-   * @param {string} [options.servicePath] - The domain name of the
+   * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
   constructor(opts) {