fix details in benchmark

Signed-off-by: martinvuyk <[email protected]>

stdlib/benchmarks/collections/bench_string.mojo

@@ -10,7 +10,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 # ===----------------------------------------------------------------------=== #
-# RUN: %mojo-no-debug %s
+# RUN: %mojo-no-debug %s -t
 # NOTE: to test changes on the current branch using run-benchmarks.sh, remove
 # the -t flag. Remember to replace it again before pushing any code.
 
@@ -238,7 +238,7 @@ def main():
     )
     alias old_chars = ("a", "ó", "ل", "и", "一")
     alias new_chars = ("A", "Ó", "ل", "И", "一")
-    alias lengths = (1_000_000,)
+    alias lengths = (10, 30, 50, 100, 1000, 10_000, 100_000, 1_000_000)
     """At an average 5 letters per word and 300 words per page
     (in the English language):