Reorder use cases pages

Author: yatarkan

site/docs/use-cases/speech-generation/index.mdx

@@ -1,5 +1,5 @@
 ---
-sidebar_position: 7
+sidebar_position: 5
 ---
 import OptimumCLI from '@site/src/components/OptimumCLI';
 import ConvertModelSection from '../_shared/_convert_model.mdx';

site/docs/use-cases/text-embedding/index.mdx

@@ -1,5 +1,5 @@
 ---
-sidebar_position: 5
+sidebar_position: 6
 ---
 import OptimumCLI from '@site/src/components/OptimumCLI';
 import ConvertModelSection from '../_shared/_convert_model.mdx';

site/docs/use-cases/text-rerank/index.mdx

@@ -1,5 +1,5 @@
 ---
-sidebar_position: 6
+sidebar_position: 7
 ---
 import OptimumCLI from '@site/src/components/OptimumCLI';
 import ConvertModelSection from '../_shared/_convert_model.mdx';