BUG: Fix find_package docs for refind feature

Recently we taught find_package to re-find a package configuration file
if it is given a wrong answer.  This fixes the documentation to reflect
the change.

Source/cmFindPackageCommand.cxx

@@ -155,8 +155,7 @@ cmFindPackageCommand::cmFindPackageCommand()
     "argument is specified.  If REQUIRED is specified and the package "
     "is not found a fatal error is generated and the configure step stops "
     "executing.  If <package>_DIR has been set to a directory not containing "
-    "a configuration file a fatal error is always generated because user "
-    "intervention is required."
+    "a configuration file CMake will ignore it and search from scratch."
     "\n"
     "When the [version] argument is given Config mode will only find a "
     "version of the package that claims compatibility with the requested "