Merge pull request #4475 from xingxue-ibm/add-aix-triple

Add AIX triple in Cargo.toml for documentation

Author: tgross35

Cargo.toml

@@ -73,6 +73,7 @@ targets = [
     "powerpc-unknown-netbsd",
     "powerpc-wrs-vxworks",
     "powerpc-wrs-vxworks-spe",
+    "powerpc64-ibm-aix",
     "powerpc64-unknown-freebsd",
     "powerpc64-unknown-linux-gnu",
     "powerpc64-wrs-vxworks",