Fix typo.

Author: mcordingley

README.md

@@ -110,6 +110,7 @@ If you need to combine together matrices, you can do so by calling the concatena
     - Drop deprecated functions and properties.
 
 - 1.3.0
+    - Fix typo in names of `concatenateRight()` and `concatenateBottom()`
     - Remove generated Phar file. Users who need it should use the `build-phar.php` script to generate one.
     - Refactor LUDecomposition to have a less awkward constructor.
     - Split `add()` into `addMatrix()` and `addScalar()`. Deprecate `add()`.

src/Matrix.php

@@ -351,7 +351,7 @@ public function toArray()
      * @return Matrix
      * @throws MatrixException
      */
-    public function contatenateBottom(Matrix $other)
+    public function concatenateBottom(Matrix $other)
     {
         if ($this->getColumnCount() !== $other->getColumnCount()) {
             throw new MatrixException(
@@ -370,7 +370,7 @@ public function contatenateBottom(Matrix $other)
      * @return Matrix
      * @throws MatrixException
      */
-    public function contatenateRight(Matrix $other)
+    public function concatenateRight(Matrix $other)
     {
         if ($this->getRowCount() !== $other->getRowCount()) {
             throw new MatrixException(