Fix valuedata type to match description.

Author: Shadouts

bip-0174.mediawiki

@@ -120,7 +120,7 @@ The currently defined global types are as follows:
 | <tt>PSBT_GLOBAL_TX_VERSION = 0x02</tt>
 | None
 | No key data
-| <tt><32-bit little endian uint version></tt>
+| <tt><32-bit little endian int version></tt>
 | The 32-bit little endian signed integer representing the version number of the transaction being created. Note that this is not the same as the PSBT version number specified by the PSBT_GLOBAL_VERSION field.
 | 2
 | 0

bip-0370.mediawiki

@@ -62,7 +62,7 @@ The new global types for PSBT Version 2 are as follows:
 | <tt>PSBT_GLOBAL_TX_VERSION = 0x02</tt>
 | None
 | No key data
-| <tt><32-bit little endian uint version></tt>
+| <tt><32-bit little endian int version></tt>
 | The 32-bit little endian signed integer representing the version number of the transaction being created. Note that this is not the same as the PSBT version number specified by the PSBT_GLOBAL_VERSION field.
 | 2
 | 0