changelog-v2: fix the docket `struct`

The previous definition used `L` which is actually 4 bytes, while the
documentation and intend was to use `Q`, i.e. 8 bytes.

mercurial/revlogutils/docket.py

@@ -90,7 +90,7 b' if stable_docket_file:'
 # * 8 bytes: pending size of data
 # * 8 bytes: pending size of sidedata
 # * 1 bytes: default compression header
-S_HEADER = struct.Struct(constants.INDEX_HEADER_FMT + b'BBBBBBLLLLLLc')
+S_HEADER = struct.Struct(constants.INDEX_HEADER_FMT + b'BBBBBBQQQQQQc')
 # * 1 bytes: size of index uuid
 # * 8 bytes: size of file
 S_OLD_UID = struct.Struct('>BL')