fix typo

src/main/scala/com/fulcrumgenomics/umi/CopyUmiFromReadName.scala

@@ -47,7 +47,7 @@ import com.fulcrumgenomics.util.{Io, ProgressLogger}
     |Some tools (e.g. BCL Convert) may reverse-complement UMIs on R2 and add a prefix to indicate that the sequence
     |has been reverse-complemented.  The `--rc-prefix` option specifies the prefix character(s) and causes them to
     |be removed.  Additionally, if the `--normalize-rc-umis` flag is specified, any reverse-complemented UMIs will
-    |be normalized (i.e., reverse-completemented back to be in the forward orientation).
+    |be normalized (i.e., reverse-complemented back to be in the forward orientation).
     |
     |To obtain behavior similar to `umi_tools`' `--umi-separator=":r"`, specify the delimiter and
     |prefix separately, i.e. `--field-delimiter=":"` and `--rc-prefix="r"`.