Replace 1 author in AR2 WGII Ch1 (OCR misspelling)

* 1 CA author: "I.C. Prentice"
Reorder authors to match order in source document
Replace 2 authors in AR2 WGII Ch2

* 2 LA authors: "S. Diaz" (incompatible first name initial),
                "K. Galvin" (OCR misspelling)
Add 1 missing author to AR2 WGII Ch2

* 1 LA author: "E. Holland"