Minor table layout change

CRAMv4.tex

@@ -1127,7 +1127,7 @@ \subsubsection*{BAM bit flags (BF data series)}
 Note however some of these flags can be derived during decode, so may be omitted in the CRAM file and the bits computed based on both reads of a pair-end library residing within the same slice.
 
 \begin{threeparttable}[t]
-\begin{tabular}{|>{\raggedright}p{144pt}|>{\raggedright}p{144pt}|>{\raggedright}p{144pt}|}
+\begin{tabular}{|l|l|l|}
 \hline
 \textbf{Bit flag} & \textbf{Comment} & \textbf{Description}\tabularnewline
 \hline