Documentation for string comparison macros outdated

[Pecora0]

Have a look at the documentation of e.g. ASSERT_STRNEQ in the README https://github.com/sheredom/utest.h/blob/master/README.md#assert_strneqx-y It tells us that that the macro takes two arguments but in utest.h the macro is defined as having three arguments. (It makes us specify the length separately which is a good decision in my opinion). The following macros have the same issue:

• EXPECT_STRNEQ
• EXPECT_STRNEQ_MSG
• ASSERT_STRNEQ
• ASSERT_STRNEQ_MSG
• EXPECT_STRNNE
• EXPECT_STRNNE_MSG
• ASSERT_STRNNE
• ASSERT_STRNNE_MSG