move tensorflow to v1; reword migration

Author: sdgilley

articles/machine-learning/toc.yml

@@ -15,9 +15,9 @@
     - name: How it works
       displayName: concepts, definitions, glossary
       href: concept-azure-machine-learning-v2.md
-- name: Migration from v1 to v2
+- name: Upgrade to SDK v2
   items:
-    - name: Migration overview
+    - name: Upgrade overview
       displayName: migration
       href: how-to-migrate-from-v1.md
     - name: Migrate resources and assets
@@ -460,9 +460,6 @@
               href: how-to-log-mlflow-models.md
             - name: Query & compare experiments and runs
               href: how-to-track-experiments-mlflow.md
-            - name: Visualize runs with TensorBoard
-              displayName: log, monitor, metrics
-              href: how-to-monitor-tensorboard.md
             - name: Migrate from SDK v1 logging to MLflow
               href: reference-migrate-sdk-v1-mlflow-tracking.md
         - name: Train and track with MLflow

articles/machine-learning/v1/toc.yml

@@ -8,9 +8,9 @@
     displayName: architecture, concepts, definitions, glossary
     href: concept-azure-machine-learning-architecture.md
 
-- name: Migration from v1 to v2
+- name: Upgrade to SDK v2
   items:
-    - name: Migration overview
+    - name: Upgrade overview
       displayName: migration
       href: ../how-to-migrate-from-v1.md
     - name: Migrate resources and assets
@@ -261,6 +261,9 @@
       href: how-to-use-mlflow.md
     - name: Log & view metrics
       href: how-to-log-view-metrics.md
+    - name: Visualize runs with TensorBoard
+      displayName: log, monitor, metrics
+      href: ../how-to-monitor-tensorboard.md
     - name: Interpret ML models
       displayName: SDK, interpret, explain, explainability, interpretability
       href: ../how-to-machine-learning-interpretability-aml.md