libbpf-rs: Fix typo 'proram' -> 'program'

Fix a typo where 'program' was accidentally spelled 'proram' in two unit
tests.

Signed-off-by: Daniel Müller <deso@posteo.net>

Author: d-e-s-o

libbpf-rs/tests/test.rs

@@ -876,7 +876,7 @@ fn test_object_program_helper_probes() {
 }
 
 #[test]
-fn test_object_open_proram_insns() {
+fn test_object_open_program_insns() {
     bump_rlimit_mlock();
 
     let open_obj = open_test_object("usdt.bpf.o");
@@ -889,7 +889,7 @@ fn test_object_open_proram_insns() {
 }
 
 #[test]
-fn test_object_proram_insns() {
+fn test_object_program_insns() {
     bump_rlimit_mlock();
 
     let obj = get_test_object("usdt.bpf.o");