### Basic Infos - [x] This issue complies with the [issue POLICY doc](https://github.com/esp8266/Arduino/blob/master/POLICY.md). - [x] I have read the documentation at [readthedocs](https://arduino-esp8266.readthedocs.io/en/latest) and the issue is not addressed there. - [x] I have tested that the issue is present in current master branch (aka latest git). - [x] I have searched the issue tracker for a similar issue. - [x] If there is a stack dump, I have decoded it. - [x] I have filled out all fields below. ### Problem Description In the documentation for the OTA [HTTP Server method](https://arduino-esp8266.readthedocs.io/en/latest/ota_updates/readme.html#http-server) the information surrounding headers passed to the server is incorrect. The [code](https://github.com/esp8266/Arduino/blob/70e4457041eeb723033fc8011f3d724245d004ae/libraries/ESP8266httpUpdate/src/ESP8266httpUpdate.cpp#L262) has been updated but the documentation hasn't. I have submitted #7633 to address this.