pulumi-cancel: add page (#14789)

pages/common/pulumi-cancel.md

@@ -0,0 +1,16 @@
+# pulumi cancel
+
+> Cancel a stack's currently running update, if any.
+> More information: <https://www.pulumi.com/docs/iac/cli/commands/pulumi_cancel/>.
+
+- Cancel a stack's currently running update, if any:
+
+`pulumi cancel {{stack_name}}`
+
+- Skip confirmation prompts, and proceed with cancellation anyway:
+
+`pulumi cancel --yes`
+
+- Display help:
+
+`pulumi cancel --help`