Update README.md

README.md

@@ -115,7 +115,7 @@ SonicPC additionally computes some G2 elements for shift powers: `(1/\beta)^i H`
 
 - Commit:
 When there is no degree bound, both are the same.
-When there is a degree bound, MarlinPC is more expensive: it needs an additional commitment to commit to the shifted poynomial. 
+When there is a degree bound, MarlinPC is more expensive: it needs an additional commitment to commit to the shifted polynomial. 
 
 - Open: 
 When there is no degree bound, both are the same.