Skip cppsuite files in s_string

Summary
Our script s_string does not support camelCase and reports lots of false positives from the cppsuite after WT-9385. This is temporary and will be resolved through WT-9433.

Motivation

• Does this affect any team outside of WT?
  No

• How likely is it that this use case or problem will occur?
  We cannot use camelCase for the cppsuite files which prevents us from following the coding guidelines.

• If the problem does occur, what are the consequences and how severe are they?
  Blocking WT-9385.

• Is this issue urgent?
  No

Acceptance Criteria (Definition of Done)
s_script should ignore the test/cppsuite folder.

[Optional] Suggested Solution

diff --git a/dist/s_string b/dist/s_string

index 1de04dda7..e1864f58e 100755

--- a/dist/s_string

+++ b/dist/s_string

@@ -46,8 +46,8 @@ check() {

 # List of files to spellchk.

 l=`(cd .. &&

-    find bench examples ext src test -name '*.[chsy]' &&

-    find src -name '*.in' && find test -name '*.cxx' && find test -name '*.cpp')`

+    find bench examples ext src test -not -path "test/cppsuite/*" -name '*.[chsy]' &&

+    find src -name '*.in' && find test -name '*.cxx' && find test -not -path "test/cppsuite/*" -name '*.cpp')`