build: Fix Cargo.toml formatting

In 42e9632c53 a fix was made to address a
typo in the taplo configuration file. Fixing this typo indicated that
many Cargo.toml files were no longer adhering to the formatting rules.
Fix the formatting by running `taplo fmt`.

Signed-off-by: Rob Bradford <rbradford@rivosinc.com>

net_util/Cargo.toml

@@ -16,9 +16,9 @@ thiserror = "1.0.60"
 virtio-bindings = "0.2.2"
 virtio-queue = "0.12.0"
 vm-memory = { version = "0.14.1", features = [
-  "backend-mmap",
   "backend-atomic",
   "backend-bitmap",
+  "backend-mmap",
 ] }
 vm-virtio = { path = "../vm-virtio" }
 vmm-sys-util = "0.12.1"