Documentation: Update QEMU documentation URLs. #480

Job	Run time
dpdk gcc	5s
osx clang --disable-ssl	1m 34s
linux deb no dpdk	6m 42s
linux rpm fedora	4m 1s
clang-analyze	18m 3s
linux gcc --disable-ssl	2m 39s
linux clang --disable-ssl	2m 48s
linux gcc c99	2m 22s
linux clang c99	2m 32s
linux gcc test	8m 19s
linux clang address,undefined test	16m 11s
linux gcc test --enable-shared	11m 14s
linux clang test --enable-shared	11m 41s
linux gcc check check-dpdk dpdk	17m 50s
linux clang check check-dpdk dpdk	17m 53s
linux gcc test -ljemalloc	8m 41s
linux clang test -ljemalloc	8m 31s
linux gcc --enable-afxdp	2m 28s
linux clang --enable-afxdp	2m 23s
linux gcc dpdk --enable-shared	3m 15s
linux clang dpdk --enable-shared	3m 28s
linux gcc dpdk-shared	2m 36s
linux clang dpdk-shared	2m 44s
linux gcc dpdk-shared --enable-shared	3m 28s
linux clang dpdk-shared --enable-shared	3m 23s
linux gcc m32 --disable-ssl	2m 26s
linux gcc check-ovsdb-cluster	6m 51s
linux gcc check-kernel -100	8m 49s
linux gcc check-kernel 100-	9m 32s
linux clang address,undefined check-kernel -100	11m 34s
linux clang address,undefined check-kernel 100-	11m 55s
linux gcc check-offloads -100	8m 54s
linux gcc check-offloads 100-	8m 5s
linux gcc dpdk check-system-userspace	11m 8s
linux clang address,undefined dpdk check-system-userspace	14m 23s
linux gcc dpdk check-system-tso	10m 40s
linux gcc dpdk check-afxdp	11m 3s
	4h 40m 11s

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