fix(dissertation): typos in background stuff in introduction

pub/dissertation/chapters/introduction.tex

@@ -9,7 +9,7 @@
     \item Procedures in checklists must be tested in simulators~\cite{nasa-design},
       which usually means trained pilots test it, as the tests need
       to work consistently~\cite{manifesto} (making sure it's not lengthy,
-      concicse and gets critical procedures)
+      concise and gets critical procedures)
       	\lfcomment{Testing for what? What's the baseline? I guess you will need some kind of evidence/argument that demonstrates that with and without the checklist results are markedly different. }
     \item Checklists are usually carried out in high
         workload environments, especially emergency ones
@@ -40,7 +40,7 @@
       \begin{itemize}
         \item Can be done in an amount of time that will not endanger aircraft
         \item Provides reproducible results
-        \item Procedures will not endanger aircraft or crew further (Crew refering to Checklist Manifesto with the cargo door blowout)
+        \item Procedures will not endanger aircraft or crew further (Crew referring to Checklist Manifesto with the cargo door blowout)
       \end{itemize}
       \lfcomment{Again, explain testing against what}
     \item Results in being able to see where to improve checklists