chore(build): fix target.json

see: <rust-lang/rust#144218>

Author: alisterd51

arch/x86/target.json

@@ -4,7 +4,7 @@
     "arch": "x86",
     "target-endian": "little",
     "target-pointer-width": "32",
-    "target-c-int-width": "32",
+    "target-c-int-width": 32,
     "os": "none",
     "executables": true,
     "linker-flavor": "ld.lld",