Changed typo

materials.xml

@@ -10,7 +10,7 @@
     <fraction n="0.234" ref="O"/>
     <fraction n="0.012" ref="Ar"/>
   </material>
-  <!-- We model vakuum just as very thin air -->
+  <!-- We model vacuum just as very thin air -->
   <material name="Vacuum">
     <D type="density" unit="g/cm3" value="1.e-25"/>
     <fraction n="0.754" ref="N"/>
@@ -185,9 +185,9 @@
     <composite n="4" ref="O"/>
   </material>
   <material name="Ar10CO2">
-    <D type="density" value= "1.802e-3" unit="g / cm3"/>
+    <D type="density" value="1.802e-3" unit="g / cm3"/>
     <composite n="10" ref="Ar"/>
-    <composite n="1"  ref ="C"/>
+    <composite n="1"  ref="C"/>
     <composite n="2"  ref="O"/>
   </material>