Correct spelling in table_information_schema_is_compatible (#7)

* Revert "Describe that this function checks for the existance a table too (#6)"

This reverts commit bdf4703.

* Update table_append_partition.py

Author: jcjones

partitionmanager/table_append_partition.py

@@ -49,7 +49,7 @@ def table_is_compatible(database, table):
 
 def table_information_schema_is_compatible(rows, table_name):
     """
-    Parse a table information schema, validating options including existance of
+    Parse a table information schema, validating options including existence of
     each table
     """
     if len(rows) != 1: