Fix spelling mistake (#167)

Summary:
Just a tiny spelling mistake.

Pull Request resolved: https://github.com/facebookincubator/ktfmt/pull/167

Reviewed By: hick209

Differential Revision: D26084409

Pulled By: cgrushko

fbshipit-source-id: 6c3ecb36d5fbb940f5c237912e24d261d3a2c1d2
diff --git a/README.md b/README.md
index a32e978..d111ff7 100644
--- a/README.md
+++ b/README.md
@@ -83,7 +83,7 @@
 `ktfmt` uses google-java-format's underlying engine, and as such, many items on [google-java-format's FAQ](https://github.com/google/google-java-format/wiki/FAQ) apply to `ktfmt` as well.
 
 In particular,
-1. `ktfmt` ignores most existing formatting. It respects existing newlines in some places, but in general, its output is determinstic and is independent of the input code.
+1. `ktfmt` ignores most existing formatting. It respects existing newlines in some places, but in general, its output is deterministic and is independent of the input code.
 2. `ktfmt` exposes no configuration options that govern formatting behavior. See https://github.com/google/google-java-format/wiki/FAQ#i-just-need-to-configure-it-a-bit-differently-how for the rationale.
 
 These two properties make `ktfmt` a good fit in large Kotlin code bases, where consistency is very important.