docs: add a link in ignoreHiddenApiPolicyError (#788)

README.md

@@ -108,7 +108,7 @@ appium:clearDeviceLogsOnStart | If set to `true` then UiAutomator2 deletes all t
 appium:buildToolsVersion | The version of Android build tools to use. By default UiAutomator2 driver uses the most recent version of build tools installed on the machine, but sometimes it might be necessary to give it a hint (let say if there is a known bug in the most recent tools version). Example: `28.0.3`
 appium:skipLogcatCapture | Being set to `true` disables automatic logcat output collection during the test run. `false` by default
 appium:suppressKillServer | Being set to `true` prevents the driver from ever killing the ADB server explicitly. Could be useful if ADB is connected wirelessly. `false` by default
-appium:ignoreHiddenApiPolicyError | Being set to `true` ignores a failure while changing hidden API access policies. Could be useful on some devices, where access to these policies has been locked by its vendor. `false` by default.
+appium:ignoreHiddenApiPolicyError | Being set to `true` ignores a failure while changing hidden API access policies to [enable access to non-SDK interfaces](https://developer.android.com/guide/app-compatibility/restrictions-non-sdk-interfaces#how_can_i_enable_access_to_non-sdk_interfaces). Could be useful on some devices, where access to these policies has been locked by its vendor. `false` by default.
 appium:hideKeyboard | Being set to `true` hides the on-screen keyboard while the session is running. Use it instead of the legacy `appium:unicodeKeyboard` one (which will be dropped in the future). This effect is achieved by assigning a custom "artificial" [input method](https://developer.android.com/develop/ui/views/touch-and-input/creating-input-method). Only use this feature for special/exploratory cases as it violates the way your application under test is normally interacted with by a human. Setting this capability explicitly to `false` enforces `adb shell ime reset` call on session startup, which resets the currently selected/enabled IMEs to the default ones as if the device is initially booted with the current locale. `undefined` by default.
 appium:mockLocationApp | Sets the package identifier of the app, which is used as a system mock location provider since Appium 1.18.0+. This capability has no effect on emulators. If the value is set to `null` or an empty string, then Appium will skip the mocked location provider setup procedure. Defaults to Appium Setting package identifier (`io.appium.settings`). Termination of a mock location provider application resets the mocked location data.
 appium:logcatFormat | The log print format, where `format` is one of: `brief` `process` `tag` `thread` `raw` `time` `threadtime` `long`. `threadtime` is the default value.