Apply suggestions from code review closes #27055

Co-authored-by: Ben Spencer <[email protected]>

modules/xfem/doc/content/source/userobjects/MeshCut2DRankTwoTensorNucleation.md

@@ -16,7 +16,7 @@ Once the nucleation criterion is reached, a line segment of the specified length
 centered on the element centroid it nucleates from.
 The direction of the nucleated crack is normal to the direction returned by the `RankTwoTensor` scalar.
 For example, `MaxInPlanePrincipal` returns the direction of the maximum in-plane principal component and the crack direction is normal to this.
-It is an error for [!param](/UserObjects/MeshCut2DRankTwoTensorNucleation/nucleation_length) to be smaller than the length of the element the crack nucleates in .
+It is an error for [!param](/UserObjects/MeshCut2DRankTwoTensorNucleation/nucleation_length) to be smaller than the length of the element the crack nucleates in, unless the user sets `nucleate_across_full_element=true`.
 A crack will only be nucleated if it is at least a distance specified by [!param](/UserObjects/MeshCut2DRankTwoTensorNucleation/nucleation_radius) away from existing or nucleated cracks.
 If multiple cracks nucleate in the same xfem update and are within the specified `nucleation_radius`, the crack nucleated from the element with the lowest id will be retained and no other cracks within the `nucleation_radius` will be nucleated.  The `nucleation_radius` is a good way to limit the number of cracks that nucleate within a region, which can help limit problems related to excessive numbers of XFEM cuts in a single element.
 

modules/xfem/src/userobjects/MeshCut2DRankTwoTensorNucleation.C

@@ -57,7 +57,8 @@ MeshCut2DRankTwoTensorNucleation::validParams()
       false,
       "Controls the behavior of nucleating cracks if 'nucleation_length' is smaller than the "
       "length required to travserse an element with a nucleating crack. If this is set to 'false', "
-      "that condition will result in an error, but if set to true, a crack with the length needed "
+      "that condition will result in an error, but if set to 'true', a crack with the length "
+      "needed "
       "to traverse the element will be inserted.");
   return params;
 }