Fix typo in README.md

README.md

@@ -13,7 +13,7 @@ K-mers are used frequently in bioinformatics because, when k is small and known
 compile time, these sequences can be efficiently represented as integers and stored
 directly in CPU registers, allowing for much more efficient computation than arbitrary-length sequences.
 
-In Kmers.jl, the `Kmer` type is psrameterized by its length, and its data is stored in an `NTuple`. This makes `Kmers` bitstypes and highly efficient.
+In Kmers.jl, the `Kmer` type is parameterized by its length, and its data is stored in an `NTuple`. This makes `Kmers` bitstypes and highly efficient.
 
 Conceptually, one may use the following analogy:
 * `BioSequence` is like `AbstractVector`