Merge #303

303: Change `-file-headers` to `--file-headers` r=eldruin a=nhwn

Running `cargo readobj --bin app -- -file-headers` will fail because of the missing hyphen.

Co-authored-by: Nathan Nguyen <nathan.tm.nguyen@gmail.com>

Author: bors[bot]

src/start/qemu.md

@@ -177,7 +177,7 @@ With `cargo-readobj` we can print the ELF headers to confirm that this is an ARM
 binary.
 
 ``` console
-cargo readobj --bin app -- -file-headers
+cargo readobj --bin app -- --file-headers
 ```
 
 Note that: