docs: clarify default values for component positioning in laser syste…

…m notebook

docs/gallery/reflective/laser_system.ipynb

@@ -22,7 +22,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "We can define each component's position (x, y, z) and orientation (rx, ry, rz) in the global coordinate system. This differs from the typical surface definition, in which only a \"thickness\" value (in z-axis) is provided. Note that the default values for x and y are 0."
+    "We can define each component's position (x, y, z) and orientation (rx, ry, rz) in the global coordinate system. This differs from the typical surface definition, in which only a \"thickness\" value (in z-axis) is provided. Note that the default value is zero for x, y, rx, ry, and rz."
    ]
   },
   {