Merged in finspin/webdemo (pull request #1)

Typo in the Documentation text

Author: pekkaklarck

login_tests/invalid_login.txt

@@ -1,7 +1,7 @@
 *** Settings ***
 Documentation     A test suite containing tests related to invalid login.
 ...
-...               These tests are data-driven by they nature. They use a single
+...               These tests are data-driven by their nature. They use a single
 ...               keyword, specified with Test Template setting, that is called
 ...               with different arguments to cover different scenarios.
 ...