chore: update README

Signed-off-by: Fredrik Lundkvist <[email protected]>

README.md

@@ -31,7 +31,7 @@ package the output of the transcoding job referenced by the message.
 | `PACKAGE_FORMAT_OPTIONS_JSON` | Optional JSON string with format options for shaka packager, format as defined in https://github.com/Eyevinn/shaka-packager-s3/blob/main/src/packager.ts                                                                         |
 | `VIDEO_STREAM_KEY_TEMPLATE`   | Optional template for video stream key, see below for supported keywords                                                                                                                                                         | `$VIDEOIDX$_$BITRATE$`   |
 | `AUDIO_STREAM_KEY_TEMPLATE`   | Optional template for video stream key, see below for supported keywords                                                                                                                                                         | `$AUDIOIDX$`             |
-| `OUTPUT_SUBFOLDER_TEMPLATE`   | Template for subfolder relative to `PACKAGE_OUTPUT_FOLDER` where output will be stored. Keywords `$INPUTNAME$` and `$JOBID$` will be replaced with basename of input, and id of encore job respectively                          | `$INPUTNAME$/$JOBID$`    |
+| `OUTPUT_SUBFOLDER_TEMPLATE`   | Template for subfolder relative to `PACKAGE_OUTPUT_FOLDER` where output will be stored. Keywords `$INPUTNAME$`, `$JOBID$`, and `$EXTERNALID` will be replaced with basename of input, id, and external id of encore job respectively                          | `$INPUTNAME$/$JOBID$`    |
 | `DASH_MANIFEST_NAME_TEMPLATE` | Template for name of DASH manifest file. Keywords `$INPUTNAME$` and `$JOBID$` will be replaced with basename of input, and id of encore job respectively. If unset, uses default from `shaka-packager-s3` library `manifest.mpd` |                          |
 | `HLS_MANIFEST_NAME_TEMPLATE`  | Template for name of HLS manifest file. Keywords `$INPUTNAME$` and `$JOBID$` will be replaced with basename of input, and id of encore job respectively. If unset, uses default from `shaka-packager-s3` library, `index.m3u8`   |                          |
 | `ENCORE_PASSWORD`             | Optional password for the encore instance `user` user                                                                                                                                                                            |                          |