[checklists] Clean up and align HW and SW checklists

This introduces the following changes:
- Remove Reviewer(s) and signoff for D1, D2, V1, V2
- Align discrepancies wrt to template
- Fix all links to checklist items
- Remove reviewer and signed-off rows for S1/2
- Fix links in SW checklists

Signed-off-by: Michael Schaffner <msf@opentitan.org>
diff --git a/sw/device/lib/dif/dif_spi_device.md b/sw/device/lib/dif/dif_spi_device.md
index f76671f..6f6b1d3 100644
--- a/sw/device/lib/dif/dif_spi_device.md
+++ b/sw/device/lib/dif/dif_spi_device.md
@@ -5,7 +5,9 @@
 This checklist is for [Development Stage]({{< relref "/doc/project/development_stages.md" >}}) transitions for the [SPI Device DIF]({{< relref "hw/ip/spi_device/doc" >}}).
 All checklist items refer to the content in the [Checklist]({{< relref "/doc/project/checklist.md" >}}).
 
+## DIF Checklist
 
+### S1
 
 Type           | Item                 | Resolution  | Note/Collaterals
 ---------------|----------------------|-------------|------------------
@@ -13,14 +15,13 @@
 Implementation | [DIF_USED_IN_TREE][] | Not Started |
 Tests          | [DIF_TEST_UNIT][]    | Not Started |
 Tests          | [DIF_TEST_SANITY][]  | Not Started |
-Review         | Reviewer(s)          | Not Started |
-Review         | Signoff date         | Not Started |
 
-[DIF_EXISTS]:       {{< relref "/doc/project/checklist.md#dif-exists" >}}
-[DIF_USED_IN_TREE]: {{< relref "/doc/project/checklist.md#dif-used-in-tree" >}}
-[DIF_TEST_UNIT]:    {{< relref "/doc/project/checklist.md#dif-test-unit" >}}
-[DIF_TEST_SANITY]:  {{< relref "/doc/project/checklist.md#dif-test-sanity" >}}
+[DIF_EXISTS]:       {{< relref "/doc/project/checklist.md#dif_exists" >}}
+[DIF_USED_IN_TREE]: {{< relref "/doc/project/checklist.md#dif_used_in_tree" >}}
+[DIF_TEST_UNIT]:    {{< relref "/doc/project/checklist.md#dif_test_unit" >}}
+[DIF_TEST_SANITY]:  {{< relref "/doc/project/checklist.md#dif_test_sanity" >}}
 
+### S2
 
 Type           | Item                        | Resolution  | Note/Collaterals
 ---------------|-----------------------------|-------------|------------------
@@ -34,19 +35,18 @@
 Coordination   | [DIF_DV_TESTS][]            | Not Started |
 Implementation | [DIF_USED_TOCK][]           | Not Started |
 Review         | HW IP Usage Reviewer(s)     | Not Started |
-Review         | Reviewer(s)                 | Not Started |
-Review         | Signoff date                | Not Started |
 
-[DIF_FEATURES]:            {{< relref "/doc/project/checklist.md#dif-features" >}}
-[DIF_HW_USAGE_REVIEWED]:   {{< relref "/doc/project/checklist.md#dif-hw-usage-reviewed" >}}
-[DIF_HW_FEATURE_COMPLETE]: {{< relref "/doc/project/checklist.md#dif-hw-feature-complete" >}}
-[DIF_HW_PARAMS]:           {{< relref "/doc/project/checklist.md#dif-hw-params" >}}
-[DIF_DOC_HW]:              {{< relref "/doc/project/checklist.md#dif-doc-hw" >}}
-[DIF_DOC_API]:             {{< relref "/doc/project/checklist.md#dif-doc-api" >}}
-[DIF_CODE_STYLE]:          {{< relref "/doc/project/checklist.md#dif-code-style" >}}
-[DIF_DV_TESTS]:            {{< relref "/doc/project/checklist.md#dif-dv-tests" >}}
-[DIF_USED_TOCK]:           {{< relref "/doc/project/checklist.md#dif-used-tock" >}}
+[DIF_FEATURES]:            {{< relref "/doc/project/checklist.md#dif_features" >}}
+[DIF_HW_USAGE_REVIEWED]:   {{< relref "/doc/project/checklist.md#dif_hw_usage_reviewed" >}}
+[DIF_HW_FEATURE_COMPLETE]: {{< relref "/doc/project/checklist.md#dif_hw_feature_complete" >}}
+[DIF_HW_PARAMS]:           {{< relref "/doc/project/checklist.md#dif_hw_params" >}}
+[DIF_DOC_HW]:              {{< relref "/doc/project/checklist.md#dif_doc_hw" >}}
+[DIF_DOC_API]:             {{< relref "/doc/project/checklist.md#dif_doc_api" >}}
+[DIF_CODE_STYLE]:          {{< relref "/doc/project/checklist.md#dif_code_style" >}}
+[DIF_DV_TESTS]:            {{< relref "/doc/project/checklist.md#dif_dv_tests" >}}
+[DIF_USED_TOCK]:           {{< relref "/doc/project/checklist.md#dif_used_tock" >}}
 
+### S3
 
 Type           | Item                             | Resolution  | Note/Collaterals
 ---------------|----------------------------------|-------------|------------------
@@ -59,9 +59,9 @@
 Review         | Reviewer(s)                      | Not Started |
 Review         | Signoff date                     | Not Started |
 
-[DIF_HW_DESIGN_COMPLETE]:       {{< relref "/doc/project/checklist.md#dif-hw-design-complete" >}}
-[DIF_HW_VERIFICATION_COMPLETE]: {{< relref "/doc/project/checklist.md#dif-hw-verification-complete" >}}
-[DIF_REVIEW_C_STABLE]:          {{< relref "/doc/project/checklist.md#dif-review-c-stable" >}}
-[DIF_TEST_UNIT_COMPLETE]:       {{< relref "/doc/project/checklist.md#dif-test-unit-complete" >}}
-[DIF_TODO_COMPLETE]:            {{< relref "/doc/project/checklist.md#dif-todo-complete" >}}
-[DIF_REVIEW_TOCK_STABLE]:       {{< relref "/doc/project/checklist.md#dif-review-tock-stable" >}}
+[DIF_HW_DESIGN_COMPLETE]:       {{< relref "/doc/project/checklist.md#dif_hw_design_complete" >}}
+[DIF_HW_VERIFICATION_COMPLETE]: {{< relref "/doc/project/checklist.md#dif_hw_verification_complete" >}}
+[DIF_REVIEW_C_STABLE]:          {{< relref "/doc/project/checklist.md#dif_review_c_stable" >}}
+[DIF_TEST_UNIT_COMPLETE]:       {{< relref "/doc/project/checklist.md#dif_test_unit_complete" >}}
+[DIF_TODO_COMPLETE]:            {{< relref "/doc/project/checklist.md#dif_todo_complete" >}}
+[DIF_REVIEW_TOCK_STABLE]:       {{< relref "/doc/project/checklist.md#dif_review_tock_stable" >}}