docs: fix the meson aarch64 cross-file

`gcc-ar` is preferred over the generic `ar`, and the `arm` family is
for 32-bit ARM [1].

[1] https://mesonbuild.com/Reference-tables.html#cpu-families

Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
diff --git a/docs/meson.html b/docs/meson.html
index 3bef808..89a19dd 100644
--- a/docs/meson.html
+++ b/docs/meson.html
@@ -286,14 +286,14 @@
 [binaries]
 c = '/usr/bin/aarch64-linux-gnu-gcc'
 cpp = '/usr/bin/aarch64-linux-gnu-g++'
-ar = '/usr/bin/aarch64-linux-gnu-ar'
+ar = '/usr/bin/aarch64-linux-gnu-gcc-ar'
 strip = '/usr/bin/aarch64-linux-gnu-strip'
 pkgconfig = '/usr/bin/aarch64-linux-gnu-pkg-config'
 exe_wrapper = '/usr/bin/qemu-aarch64-static'
 
 [host_machine]
 system = 'linux'
-cpu_family = 'arm'
+cpu_family = 'aarch64'
 cpu = 'aarch64'
 endian = 'little'
 </pre>