Presubmit: Fix bad file path in help text

Also, manually break line to keep it less than 80 columns wide.

Bug: none
Change-Id: Iaf0118283d33e4f286b2c91996b84825afb8bda6
Notry: true
Reviewed-on: https://webrtc-review.googlesource.com/61780
Commit-Queue: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Henrik Andreassson <henrika@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22426}
diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index b645960..e533507 100755
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -424,8 +424,9 @@
                '#include <sstream>  // no-presubmit-check TODO(webrtc:8982)\n'
                'std::ostream& F() {  // no-presubmit-check TODO(webrtc:8982)\n'
                '\n'
-               'If you are adding new code, please consider using '
-               'rtc::SimpleStringBuilder (rtc_base/string/string_builder.h).\n'
+               'If you are adding new code, consider using '
+               'rtc::SimpleStringBuilder\n'
+               '(in rtc_base/strings/string_builder.h).\n'
                'Affected files:\n')
   errors = []  # 2-element tuples with (file, line number)
   include_re = input_api.re.compile(r'#include <(i|o|s)stream>')