correction of wording

Author: gw00207

string_grouper/string_grouper.py

@@ -195,7 +195,7 @@ class StringGrouperNotFitException(Exception):
 
 
 class StringLengthException(Exception):
-    """Raised when vectoriser is fit on strings that are not of length greater than ngram size"""
+    """Raised when vectoriser is fit on strings that are not of length greater or equal to ngram size"""
     pass
 
 
@@ -268,7 +268,7 @@ def fit(self) -> 'StringGrouper':
         if not StringGrouper._strings_are_of_sufficient_length(self._master,  self._config.ngram_size) or \
                 (self._duplicates is not None
                  and not StringGrouper._strings_are_of_sufficient_length(self._duplicates, self._config.ngram_size)):
-            raise StringLengthException('Input string lengths are not all greater than n_gram length')
+            raise StringLengthException('None of input string lengths are greater than or equal to n_gram length')
 
         master_matrix, duplicate_matrix = self._get_tf_idf_matrices()