run_your_first_design.md: Unified information on acXML data

docs/documentation/sizing/landing_gear_design/run_your_first_design.md

@@ -134,9 +134,9 @@ Aircraft exchange file
 |  |  |  |  |  |  |  |- Tire diameter
 |  |  |  |  |  |  |  |- Tire section width
 ```
-<sup>*</sup> Node was shortened. It contains the following sub-nodes: x, y, z
+<sup>*</sup> Node has been shortened. It contains the following sub-nodes: x, y, z
 
-<sup>**</sup> Node was shortened. It contains sub-nodes with information on the mass, inertia, and center of gravity.
+<sup>*</sup> Node has been shortened. It contains sub-nodes with information on the mass, inertia, and center of gravity.
 
 ### Generation of geometry file {#existing-geometry-file}
 The calculated geometry data is written to the `existing_landing_gear_geometry.xml` file and can then be used if the `use_existing_geometry` flag is set to `true`.