docs: update MLflow screenshots from RHOAI 3.4 cluster

Replace screenshots taken from ODH cluster with proper RHOAI 3.4
branded screenshots showing:
- Experiments list page with "Launch MLflow" link
- Run detail page with actual training metrics (train_loss,
  train_runtime, train_samples_per_second, etc.)

Verified all three algorithms (LoRA, OSFT, SFT) successfully log
metrics to MLflow on RHOAI 3.4 (A100 GPUs, MLflow 3.10.1).

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: briangallagher

examples/fine-tuning/images/mlflow-experiments.png

@@ -208,6 +208,6 @@ You can also launch the full MLflow UI by clicking the **"Launch MLflow"** link
 
 ![](../images/mlflow-experiments.png)
 
-The Experiments section can be found under **Develop & train** in the left navigation:
+Each run logs metrics including training loss, learning rate, samples per second, and more:
 
-![](../images/mlflow-nav.png)
+![](../images/mlflow-run-metrics.png)

examples/fine-tuning/images/mlflow-nav.png

@@ -243,6 +243,6 @@ You can also launch the full MLflow UI by clicking the **"Launch MLflow"** link
 
 ![](../images/mlflow-experiments.png)
 
-The Experiments section can be found under **Develop & train** in the left navigation:
+Each run logs metrics including training loss, learning rate, samples per second, and more:
 
-![](../images/mlflow-nav.png)
+![](../images/mlflow-run-metrics.png)

examples/fine-tuning/images/mlflow-run-metrics.png

@@ -190,6 +190,6 @@ You can also launch the full MLflow UI by clicking the **"Launch MLflow"** link
 
 ![](../images/mlflow-experiments.png)
 
-The Experiments section can be found under **Develop & train** in the left navigation:
+Each run logs metrics including training loss, learning rate, samples per second, and more:
 
-![](../images/mlflow-nav.png)
+![](../images/mlflow-run-metrics.png)