[pipelines] Update pipeline overview link in everywhere in website (#3081)

assets/icons/pipelines.svg

@@ -54,7 +54,7 @@
      inkscape:pagecheckerboard="false" />
   <a
      id="a3946"
-     xlink:href="https://www.kubeflow.org/docs/guides/pipelines/pipelines-overview/"
+     xlink:href="https://www.kubeflow.org/docs/components/pipelines/introduction/"
      target="_blank"
      transform="matrix(0.49363962,0,0,0.49963206,1.4381833,0.08830732)">
     <image

content/en/_index.html

@@ -111,7 +111,7 @@ title = "Kubeflow"
         <div class="card-body bg-primary-dark">
           <h5 class="card-title text-white section-head">Pipelines</h5>
           <p class="card-text text-white">
-			<a target="_blank" rel="noopener" href="/docs/components/pipelines/overview/pipelines-overview/" >Kubeflow Pipelines</a> is a comprehensive solution for deploying
+			<a target="_blank" rel="noopener" href="/docs/components/pipelines/introduction/" >Kubeflow Pipelines</a> is a comprehensive solution for deploying
             and managing end-to-end ML workflows. Use Kubeflow Pipelines for rapid and reliable experimentation.
             You can schedule and compare runs, and examine detailed reports on each run.
           </p>

content/en/pipelines.svg

@@ -54,7 +54,7 @@
      inkscape:pagecheckerboard="false" />
   <a
      id="a3946"
-     xlink:href="https://www.kubeflow.org/docs/guides/pipelines/pipelines-overview/"
+     xlink:href="https://www.kubeflow.org/docs/components/pipelines/introduction/"
      target="_blank"
      transform="matrix(0.49363962,0,0,0.49963206,1.4381833,0.08830732)">
     <image
@@ -66,4 +66,4 @@
        height="240"
        width="240" />
   </a>
-</svg>
+</svg>