add SoftclDiceLoss and SoftDiceclDiceLoss loss function in documentat…

…ion (#7271)

Fixes #7193

### Description
add SoftclDiceLoss and SoftDiceclDiceLoss loss function in
documentation(https://github.com/Project-MONAI/MONAI/blob/dev/docs/source/losses.rst?plain=1)

### Types of changes
<!--- Put an `x` in all the boxes that apply, and remove the not
applicable items -->
- [x] Non-breaking change (fix or new feature that would not break
existing functionality).
- [ ] Breaking change (fix or new feature that would cause existing
functionality to change).
- [ ] New tests added to cover the changes.
- [ ] Integration tests passed locally by running `./runtests.sh -f -u
--net --coverage`.
- [ ] Quick tests passed locally by running `./runtests.sh --quick
--unittests --disttests`.
- [ ] In-line docstrings updated.
- [ ] Documentation updated, tested `make html` command in the `docs/`
folder.

---------

Signed-off-by: ytl0623 <david89062388@gmail.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: YunLiu <55491388+KumoLiu@users.noreply.github.com>

docs/source/losses.rst

@@ -78,6 +78,16 @@ Segmentation Losses
 .. autoclass:: HausdorffDTLoss
     :members:
 
+`SoftclDiceLoss`
+~~~~~~~~~~~~~~~~
+.. autoclass:: SoftclDiceLoss
+    :members:
+
+`SoftDiceclDiceLoss`
+~~~~~~~~~~~~~~~~~~~~
+.. autoclass:: SoftDiceclDiceLoss
+    :members:
+
 Registration Losses
 -------------------