[handbook][4_newfoldersetup] cleanup

doc/handbook/4_newfoldersetup.tex

@@ -22,6 +22,6 @@ dune_add_test(NAME my_test
                CMD_ARGS my_test params.input)
 \end{lstlisting}
 
-Here, we create an exectuable called \texttt{my\_test} from a source file \texttt{mainfile.cc}.
+Here, we create an executable called \texttt{my\_test} from a source file \texttt{mainfile.cc}.
 The name of the test will also be \texttt{my\_test} (has to be unique). The last argument specifies a command - here, we just run the executbable \texttt{my\_test} with an input file \texttt{params.input}. For more advanced uses of
-the \texttt{add\_dune\_test} macro, have a look at the \texttt{test} directory. A complete documentation is given \href{https://www.dune-project.org/sphinx/core-2.5/}{here}
+the \texttt{add\_dune\_test} macro, have a look at the \texttt{test} directory. A complete documentation is given under \url{https://www.dune-project.org/sphinx/core-2.5/}.