Update binary-format.md
I think you got a character missing at the place? It's small but caused me a bit of struggle while reading
@@ -119,7 +119,7 @@ Buffer :
header:
- +0x0000 00 01 00 00 ; find root table at offset +0x0000100.
+ +0x0000 00 01 00 00 ; find root table at offset +0x00000100.
+0x0004 'N', 'O', 'O', 'B' ; possibly our file identifier
...
