commit-graph-format.txt: all multi-byte numbers are in network byte order

The commit-graph format specifies that "All 4-byte numbers are in
network order", but the commit-graph contains 8-byte integers as well
(file offsets in the Chunk Lookup table), and their byte order is
unspecified.

Clarify that all multi-byte integers are in network byte order.

Signed-off-by: SZEDER Gábor <[email protected]>
Signed-off-by: Derrick Stolee <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: szeder

Documentation/technical/commit-graph-format.txt

@@ -32,7 +32,7 @@ the body into "chunks" and provide a binary lookup table at the beginning
 of the body. The header includes certain values, such as number of chunks
 and hash type.
 
-All 4-byte numbers are in network order.
+All multi-byte numbers are in network byte order.
 
 HEADER: