Apply formatting

doc/source/how-to-implement-strategies.rst

@@ -1,9 +1,6 @@
 :og:description: Create custom federated learning strategies in Flower by modifying client sampling, training, aggregation, and evaluation for enhanced flexibility and control.
-
-.. title:: How-to Tutorial: Build Custom Federated Learning Strategies in Flower
-
 .. meta::
-   :description: Create custom federated learning strategies in Flower by modifying client sampling, training, aggregation, and evaluation for enhanced flexibility and control.
+    :description: Create custom federated learning strategies in Flower by modifying client sampling, training, aggregation, and evaluation for enhanced flexibility and control.
 
 Implement strategies
 ====================