Update references to test helpers

Replace:
* tests/src -> framework/tests/src
* tests/include -> framework/tests/include

Except for occurrences of:
* tests/src/test_helpers (since this only contains ssl_helpers.c)
* tests/src/test_certs.h
* tests/include/alt_dummy

Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/docs/architecture/psa-shared-memory.md b/docs/architecture/psa-shared-memory.md
index 283ffc6..5f69a77 100644
--- a/docs/architecture/psa-shared-memory.md
+++ b/docs/architecture/psa-shared-memory.md
@@ -661,7 +661,7 @@
 #define psa_aead_update(...) mem_poison_psa_aead_update(__VA_ARGS__)
 ```
 
-There now exists a more generic mechanism for making exactly this kind of transformation - the PSA test wrappers, which exist in the files `tests/include/test/psa_test_wrappers.h` and `tests/src/psa_test_wrappers.c`. These are wrappers around all PSA functions that allow testing code to be inserted at the start and end of a PSA function call.
+There now exists a more generic mechanism for making exactly this kind of transformation - the PSA test wrappers, which exist in the files `framework/tests/include/test/psa_test_wrappers.h` and `framework/tests/src/psa_test_wrappers.c`. These are wrappers around all PSA functions that allow testing code to be inserted at the start and end of a PSA function call.
 
 The test wrappers are generated by a script, although they are not automatically generated as part of the build process. Instead, they are checked into source control and must be manually updated when functions change by running `framework/scripts/generate_psa_wrappers.py`.