Fix typos pointed out by CI.

Author: hageboeck

Diff for: exercises/ExerciseSchedule_AdvancedCourse.md

@@ -5,7 +5,7 @@ HEP C++ Advanced Course's exercise schedule
 - Solutions and hints can be found in the ExercisesCheatSheet.md file located in the same directory.
 - Each exercise is in its own directory and referred to in the following by the name of the directory
 
-There are far too many exercies on each day. They are given in order in which they should be done.
+There are far too many exercises on each day. They are given in order in which they should be done.
 
 Day 1
 -----

Diff for: talk/objectorientation/constructors.tex

@@ -216,7 +216,7 @@
   \frametitlecpp[11]{Constructor inheritance}
   \begin{block}{Idea}
     \begin{itemize}
-    \item avoid having to re-declare parent's constructors
+    \item avoid having to redeclare parent's constructors
     \item by stating that we inherit all parent constructors
     \item derived class can add more constructors
     \end{itemize}