Fix improper compiler flag separation on QNX (#25)

This lead to compiler error "unknown option: -rpath" because
the flags were split up.

Author: NEOatNHNG

templates/qnx/cc_toolchain_config.bzl.template

@@ -412,11 +412,7 @@ def _impl(ctx):
                         iterate_over = "runtime_library_search_directories",
                         flag_groups = [
                             flag_group(
-                                flags = [
-                                    "-Wl",
-                                    "-rpath",
-                                    "$EXEC_ORIGIN/%{runtime_library_search_directories}",
-                                ],
+                                flags = ["-Wl,-rpath,$EXEC_ORIGIN/%{runtime_library_search_directories}"],
                             ),
                         ],
                         expand_if_available = "runtime_library_search_directories",