BV-BRC feature id patterns

[AbhirupaGhosh]

Usual pattern of feature IDs in BV-BRC is fig|123.456.peg.7
So the string extraction pattern was fig\\|[0-9]+\\.[0-9]+\\.peg\\.[0-9]+
However, I found a few feature IDs with pegsc like fig|1323655.3.pegsc.1
Thus, the string extraction pattern needs to be fig\\|\\d+\\.\\d+\\.peg(?:sc)?\\.\\d+