Remove ignore attribute in iceberg crate's doc. #1503
Description
Is your feature request related to a problem or challenge?
See https://github.com/apache/iceberg-rust/pull/1480/files#r2177027195
After #1480 got merged, we should not skip compilation of rust doc any more.
Describe the solution you'd like
Remove the ignore attribute in iceberg crate's doc and pass the ci.
Willingness to contribute
None