A first tiny test commit: fix a spelling error in the documentation.
diff --git a/doc/C03_TutorialArrayClass.dox b/doc/C03_TutorialArrayClass.dox
index 7d9e35b..a1d8d69 100644
--- a/doc/C03_TutorialArrayClass.dox
+++ b/doc/C03_TutorialArrayClass.dox
@@ -155,7 +155,7 @@
Both \link MatrixBase::array() .array() \endlink and \link ArrayBase::matrix() .matrix() \endlink
can be used as rvalues and as lvalues.
-Mixing matrices and arrays in an expression is forbidden with Eigen. For instance, you cannot add a amtrix and
+Mixing matrices and arrays in an expression is forbidden with Eigen. For instance, you cannot add a matrix and
array directly; the operands of a \c + operator should either both be matrices or both be arrays. However,
it is easy to convert from one to the other with \link MatrixBase::array() .array() \endlink and
\link ArrayBase::matrix() .matrix()\endlink. The exception to this rule is the assignment operator: it is