message: Correct help for --enable-endomorphism in secp256k1
diff: @@ -112,7 +112,7 @@ AC_ARG_ENABLE(exhaustive_tests,
  [use_exhaustive_tests=yes])
  AC_ARG_ENABLE(endomorphism,
  - AS_HELP_STRING([--enable-endomorphism],[enable endomorphism (default is no)]),
  + AS_HELP_STRING([--enable-endomorphism],[enable endomorphism (default is yes)]),
  [use_endomorphism=$enableval],
  [use_endomorphism=yes])
  