Clean up P2 wording
#32525 from Formula/Sports Racing Committee · Rule change · TB 22-05 (2022-04 Fastrack)
In P2, GCR section 9.1.8.C, change as follows:
"PROTOTYPE 2 (P2) CLASSIFICATION"
In GCR CONTENTS, change as follows:
"PROTOTYPE 2 (P2) CLASSIFICATION"