Improve Readme for long test certificate chains
@@ -7,4 +7,4 @@ The root is 00.crt and N+1.crt is a child of N.crt.
File cNN.pem contains the chain NN.crt to 00.crt.
-Those certificates where generated by long.sh.
+Those certificates were generated by tests/data_files/dir-maxpath/long.sh.
