Update README.md

README.md

@@ -31,7 +31,7 @@ Which receives from input:
 - _Epsilon_ (optional): The espected error tolerance (if method is `ratio`, `integral` or `threshold`).
 - _L_ (optional): Limit of the ratio of terms (if method is `ratio`).
 - _Integral of series_ (optional): The function of g(n) = ∫_n^∞ f(x) dx for the inetegral test (if method is `integral`).
-- _Precision_ (optional): The precision for the `mpmath` library (default value if 53).
+- _Precision_ (optional): The precision for the `mpmath` library (default value is 53).
 
 The function return the number of terms used in the sum and the approximation.