Fix typos in tests.

Closes #16425.

PiperOrigin-RevId: 484171015
Change-Id: Ie5a5a29574f5c5d786f385b803cbe3d25e13929c
diff --git a/src/test/cpp/rc_options_test.cc b/src/test/cpp/rc_options_test.cc
index 44bf26e..c7cec75 100644
--- a/src/test/cpp/rc_options_test.cc
+++ b/src/test/cpp/rc_options_test.cc
@@ -80,7 +80,7 @@
 
     // Test that exactly each command in the expected map was in the results,
     // and that for each of these, exactly the expected args are found, in the
-    // correct order. Note that this is not just an exercise in rewritting map
+    // correct order. Note that this is not just an exercise in rewriting map
     // equality - the results have type RcOption, and the expected values
     // are just strings. This is ignoring the source_path for convenience.
     const RcFile::OptionMap& result = rc->options();