[ffx][adb] Improve quote marks in message.

When I run "ffx starnix adb connect" it prints a message like:
  adb is connected!
  See https://fuchsia.dev/go/troubleshoot-adb-connect if it doesn't work.
  This connection's "serial number" for adb is `[fe80::affd:96dc:f632:eb68%11]:5555`.

So then I type "adb -s " and copy and paste the address, complete with
quotation marks because I don't want my shell to interpret the square
brackets as special glob marks and the percent as referring to a job
number. But I am foiled because these are forward ticks, so my shell
tries to run "[fe80::affd:96dc:f632:eb68%11]:5555" in a subshell.

In this CL I change the message to use normal single quote marks so that
I can easily copy the address.

Change-Id: Ibbdb624655779a5a7fb92fd67f1dace87a2b8921
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1235924
Commit-Queue: Ian McKellar <[email protected]>
Fuchsia-Auto-Submit: Ian McKellar <[email protected]>
Reviewed-by: Kevin Lindkvist <[email protected]>

Author: ianloic

src/developer/ffx/tools/starnix/src/adb.rs

@@ -128,7 +128,7 @@ impl AdbConnectArgs {
 
         eprintln!("adb is connected!");
         eprintln!("See https://fuchsia.dev/go/troubleshoot-adb-connect if it doesn't work.");
-        eprintln!("This connection's \"serial number\" for adb is `{adb_address}`.");
+        eprintln!("This connection's \"serial number\" for adb is '{adb_address}'.");
         Ok(())
     }
 }