removed non-ascii character from README.rts

README.rst

@@ -25,7 +25,7 @@ database has been used in the first Automatic Speaker Verification Spoofing and
 Countermeasures Challenge (ASVspoof 2015). Genuine speech is collected from 106
 speakers (45 male, 61 female) and with no significant channel or background
 noise effects. Spoofed speech is generated from the genuine data using a number
-of different spoofing algorithms. The full dataset is partitioned into three
+of different spoofing algorithms. The full dataset is partitioned into three
 subsets, the first for training, the second for development, and the third for
 evaluation. More details can be found in the evaluation plan in the summary
 paper::