Fixed wrong doc for the __recordFmt() method

Author: karimbahgat

shapefile.py

@@ -477,7 +477,7 @@ def __dbfHeader(self):
         self.__recStruct = Struct(fmt)
 
     def __recordFmt(self):
-        """Calculates the size of a .shp geometry record."""
+        """Calculates the format and size of a .dbf record."""
         if not self.numRecords:
             self.__dbfHeader()
         fmt = ''.join(['%ds' % fieldinfo[2] for fieldinfo in self.fields])