Update comments

src/Culling/babylon.boundingBox.ts

@@ -69,7 +69,7 @@ module BABYLON {
         // Methods
 
         /**
-         * Recreates the entire bounding box from scratch, as when the constructor is called
+         * Recreates the entire bounding box from scratch as if we call the constructor in place
          * @param min defines the new minimum vector (in local space)
          * @param max defines the new maximum vector (in local space)
          * @param worldMatrix defines the new world matrix

src/Culling/babylon.boundingInfo.ts

@@ -68,7 +68,7 @@ module BABYLON {
         }
 
         /**
-         * Recreates the entire bounding info from scratch
+         * Recreates the entire bounding info from scratch as if we call the constructor in place
          * @param min defines the new minimum vector (in local space)
          * @param max defines the new maximum vector (in local space)
          * @param worldMatrix defines the new world matrix

src/Culling/babylon.boundingSphere.ts

@@ -42,7 +42,7 @@ module BABYLON {
         }
 
         /**
-         * Recreates the entire bounding sphere from scratch
+         * Recreates the entire bounding sphere from scratch as if we call the constructor in place
          * @param min defines the new minimum vector (in local space)
          * @param max defines the new maximum vector (in local space)
          * @param worldMatrix defines the new world matrix