docs(pr-x12): canon follow-ups — R-7 path fix, R-13 primitives, R-14, R-15 #463

Job	Run time
tier4-avx512-check	31s
Pass MSRV values to other jobs	3s
clippy/1.95.0	40s
format/stable	22s
hpc-stream-parallel/rayon	1m 27s
native-backend/stable	7m 54s
nostd/thumbv6m-none-eabi/stable	27s
cross_test/${{ matrix.target }}/${{ matrix.rust }}	0s
nightly-simd-polyfill	0s
miri	0s
cargo-careful	0s
docs/nightly	0s
tests/1.95.0	10m 34s
blas-msrv	47s
tests/beta	11m 26s
tests/stable	11m 10s
conclusion	-1s
	45m 20s

Provide feedback