docs: optimize examples for propagating results

The propagate results only works for the embedded tasks, not for the referenced tasks.

docs/pipelineruns.md

@@ -791,9 +791,8 @@ spec:
             image: busybox
             command: ["/bin/sh", "-c"]
             args:
-              - echo
-              # - $(params.uid)
-              - $(tasks.add-uid.results.uid)
+              - echo $(tasks.add-uid.results.uid)
+              # - echo $(params.uid)
 ```
 
 On executing the `PipelineRun`, the `Results` will be interpolated during resolution.
@@ -808,8 +807,7 @@ spec:
   taskSpec:
     steps:
       args:
-        echo
-        1001
+        echo 1001
       command:
         - /bin/sh
         - -c
@@ -830,8 +828,7 @@ status:
   taskSpec:
     steps:
       args:
-        echo
-        1001
+        echo 1001
       command:
         /bin/sh
         -c

examples/v1/pipelineruns/propagating_results_implicit_resultref.yaml

@@ -1,34 +1,30 @@
 apiVersion: tekton.dev/v1
-kind: Task
-metadata:
-  name: uid-task
-spec:
-  results:
-    - name: uid
-      type: string
-  steps:
-    - name: uid
-      image: busybox
-      command: ["/bin/sh", "-c"]
-      args:
-        - echo "1001" | tee $(results.uid.path)
----
-apiVersion: tekton.dev/v1
 kind: PipelineRun
 metadata:
   name: uid-pipeline-run
 spec:
   pipelineSpec:
     tasks:
-      - name: add-uid
-        taskRef:
-          name: uid-task
-      - name: show-uid
-        taskSpec:
-          steps:
-            - name: show-uid
-              image: busybox
-              command: ["/bin/sh", "-c"]
-              args:
-                - echo
-                - $(tasks.add-uid.results.uid)
+    - name: add-uid
+      taskSpec:
+        results:
+          - name: uid
+            type: string
+        steps:
+          - name: add-uid
+            image: busybox
+            command: ["/bin/sh", "-c"]
+            args:
+              - echo "1001" | tee $(results.uid.path)
+    - name: show-uid
+      # params:
+      #   - name: uid
+      #     value: $(tasks.add-uid.results.uid)
+      taskSpec:
+        steps:
+          - name: show-uid
+            image: busybox
+            command: ["/bin/sh", "-c"]
+            args:
+              - echo $(tasks.add-uid.results.uid)
+              # - echo $(params.uid)