docs: fix docs for get token URL (#1575)

Author: congminh1254

src/main/java/com/box/sdk/BoxAPIConnection.java

@@ -435,8 +435,8 @@ public void setExpires(long milliseconds) {
 
   /**
    * Gets the token URL that's used to request access tokens. The default value is
-   * "https://www.box.com/api/oauth2/token". The URL is created from {@link
-   * BoxAPIConnection#baseURL} and {@link BoxAPIConnection#TOKEN_URL_SUFFIX}.
+   * "https://api.box.com/oauth2/token". The URL is created from {@link BoxAPIConnection#baseURL}
+   * and {@link BoxAPIConnection#TOKEN_URL_SUFFIX}.
    *
    * @return the token URL.
    */