rename quick start- it is really not quick

Author: yiyixuxu

…source/en/modular_diffusers/quicktour.md …/en/modular_diffusers/getting_started.mddocs/source/en/modular_diffusers/quicktour.md renamed to docs/source/en/modular_diffusers/getting_started.md docs/source/en/modular_diffusers/quicktour.md renamed to docs/source/en/modular_diffusers/getting_started.md

@@ -10,7 +10,7 @@ an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express o
 specific language governing permissions and limitations under the License.
 -->
 
-# Getting Started with Modular Diffusers
+# Getting Started with Modular Diffusers: An Comprehensive Overview
 
 With Modular Diffusers, we introduce a unified pipeline system that simplifies how you work with diffusion models. Instead of creating separate pipelines for each task, Modular Diffusers let you: