chore: localize keywords in @stdlib/constants/float32/gamma-lanczos-g

Replace `float64`, `64bit`, and `64-bit` keywords with `float32`,
`32bit`, and `32-bit`. Keyword array was previously identical to the
float64 sibling (no localization performed when the package was
introduced); package itself returns the float32-quantized value.

Author: claude

lib/node_modules/@stdlib/constants/float32/gamma-lanczos-g/package.json

@@ -58,9 +58,9 @@
     "float",
     "real",
     "floating-point",
-    "float64",
-    "64bit",
-    "64-bit",
+    "float32",
+    "32bit",
+    "32-bit",
     "ieee754",
     "gamma",
     "lanczos",