Standardise safety comments for virtualizationmanager and vmclient.

Bug: 290018030
Test: m vm virtmgr
Change-Id: Ia3db73b40c8bc9ee12962065d598757df7e21d3a
diff --git a/virtualizationmanager/src/main.rs b/virtualizationmanager/src/main.rs
index bd7f8af..f058547 100644
--- a/virtualizationmanager/src/main.rs
+++ b/virtualizationmanager/src/main.rs
@@ -86,7 +86,7 @@
     }
     owned_fds.push(raw_fd);
 
-    // SAFETY - Initializing OwnedFd for a RawFd provided in cmdline arguments.
+    // SAFETY: Initializing OwnedFd for a RawFd provided in cmdline arguments.
     // We checked that the integer value corresponds to a valid FD and that this
     // is the first argument to claim its ownership.
     Ok(unsafe { OwnedFd::from_raw_fd(raw_fd) })