The string for VertexAttribType::Int2101010 was wrong, similar to
the fix in ffb31229.

Test: Capture and replay first 1200 frames of COD.
Bug: b/164426913
Bug: angleproject:4048
Change-Id: I86a9ad844cde211d8273840ef7e8ecb055521316
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2357170Reviewed-by: Mohan Maiya <m.maiya@samsung.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Cody Northrop <cnorthrop@google.com>