[gdb] Fix codespell false positive by string splitting

Fix codespell false positive in gdb dir, by string splitting.
diff --git a/gdb/ada-lang.c b/gdb/ada-lang.c
index 306fd4c..564e4d6 100644
--- a/gdb/ada-lang.c
+++ b/gdb/ada-lang.c
@@ -9370,7 +9370,7 @@ ada_aggregate_component::dump (ui_file *stream, int depth)
   gdb_printf (stream, _("%*sAggregate\n"), depth, "");
   if (m_base != nullptr)
     {
-      gdb_printf (stream, _("%*swith delta\n"), depth + 1, "");
+      gdb_printf (stream, _("%*s" "with delta\n"), depth + 1, "");
       m_base->dump (stream, depth + 2);
     }
   for (const auto &item : m_components)