[Cdash] Misc. corrections to the documentation

[Igor Murzov]

Hi all.

I have some corrections to the CDash wiki. As it is not publicly
editable, I decided to send them here. So here they are:

http://public.kitware.com/Wiki/CDash:API

 "If none of the optional parameters are _not_ set" --> "If none of the
 optional parameters are set"


http://public.kitware.com/Wiki/CDash:API#Schedule_a_build_.28build_management.29

Return an array containing the status of the scheduling
 status['scheduled'] = returns 1 if the build has been scheduled
 status['statusid'] = internal status id for further reference

 ^-- status array actually contains 'status', 'scheduled' and
 'scheduleid' fields:

  status['status'] = true or false depending on whether the schedule
                      was successfully submitted
  status['scheduled'] = 1 if the build has been scheduled
  status['scheduleid'] = internal schedule id for further reference


http://public.kitware.com/Wiki/CMake_Scripting_Of_CTest

 "if (WITH_MEMCHECK AND CTEST_COVERAGE_COMMAND)" --> "if (WITH_COVERAGE
 AND CTEST_COVERAGE_COMMAND)"


http://www.cmake.org/Wiki/CTest_2.8.11_Docs

  "This option tells ctest to _perform_ act as a Dart client and
  perform a dashboard test" --> "This option tells ctest to act as a
  Dart client and perform a dashboard test"


http://www.cmake.org/Wiki/CMake_FAQ#How_can_I_extend_the_build_modes_with_a_custom_made_one_.3F

 "The following code _snipet_" --> "snippet"


http://www.cmake.org/Wiki/Git/Resources

  "Git Community Book" <-- coulde be dropped, it is the same as the
  "Pro Git" link.


-- Igor