fix "validation" vignette

[mrustl]

> obs.neubrandenburg <- keys.lid::readObservations(
+   subfolder = paths$green_roof_model_neubrandenburg,
+   rainFile = 'obs_rain_5min_Neubrandenburg.txt',
+   runoffFile = 'obs_runoff_5min_Neubrandenburg.txt',
+   temperatureFile = 'obs_temperature_10min_Neubrandenburg.txt',
+   dateTimetz = 'Etc/GMT-1', 
+   dateTimeformat = '%Y-%m-%d %H:%M:%S',
+   to_mmperhour = list(rain=1/(5/60), runoff=1/(5/60)), 
+   NAval = list(rain = -999, runoff = -999, temperature = -999))
Fehler in scan(file = file, what = what, sep = sep, quote = quote, dec = dec,  : 
  line 1 did not have 2 elements