[otbn] Update checklist to latest template

Rename AREA_CROSS_CHECK to AREA_CHECK in the D2 checklist to match the
latest template.

Signed-off-by: Philipp Wagner <phw@lowrisc.org>
diff --git a/hw/ip/otbn/doc/checklist.md b/hw/ip/otbn/doc/checklist.md
index 9514791..e045723 100644
--- a/hw/ip/otbn/doc/checklist.md
+++ b/hw/ip/otbn/doc/checklist.md
@@ -41,7 +41,7 @@
 Documentation | [MISSING_FUNC][]        | Not Started |
 Documentation | [FEATURE_FROZEN][]      | Not Started |
 RTL           | [FEATURE_COMPLETE][]    | Not Started |
-RTL           | [AREA_CROSS_CHECK][]    | Not Started |
+RTL           | [AREA_CHECK][]          | Not Started |
 RTL           | [PORT_FROZEN][]         | Not Started |
 RTL           | [ARCHITECTURE_FROZEN][] | Not Started |
 RTL           | [REVIEW_TODO][]         | Not Started |
@@ -61,7 +61,7 @@
 [MISSING_FUNC]:        {{<relref "/doc/project/checklist.md#missing_func" >}}
 [FEATURE_FROZEN]:      {{<relref "/doc/project/checklist.md#feature_frozen" >}}
 [FEATURE_COMPLETE]:    {{<relref "/doc/project/checklist.md#feature_complete" >}}
-[AREA_CROSS_CHECK]:    {{<relref "/doc/project/checklist.md#area_cross_check" >}}
+[AREA_CHECK]:          {{<relref "/doc/project/checklist.md#area_check" >}}
 [PORT_FROZEN]:         {{<relref "/doc/project/checklist.md#port_frozen" >}}
 [ARCHITECTURE_FROZEN]: {{<relref "/doc/project/checklist.md#architecture_frozen" >}}
 [REVIEW_TODO]:         {{<relref "/doc/project/checklist.md#review_todo" >}}