Typo.

command_practical/command_practical.tex

@@ -182,7 +182,7 @@ To chain processes we can use the pipe (\lstinline{|}) symbol. The file
 mitochondial DNA.
 \medskip
 
-Navigate the the directory named \lstinline{bowtie_index}.
+Navigate to the directory named \lstinline{bowtie_index}.
 \begin{lstlisting}
   $ cd exercise/bowtie_index
 \end{lstlisting}
@@ -246,11 +246,6 @@ small human short read dataset. The data will be inspected for quality, aligned,
 checked for variants and annotated.
 \medskip
 
-% Copy files
-\subsection{About the data}
-We have precompiled a small human test set of short reads.
-\medskip 
-
 % Quality control
 \subsection{Quality control with FastQC}
 Every tool which is system wide available can simply be run by typing the name