Update tutorial part numbers

Author: Noarkhh

broadcasting/index.md

@@ -2,7 +2,7 @@
 title: Membrane broadcasting tutorial
 description: >-
   Create your own media broadcasting solution!
-part: 8
+part: 7
 ---
 
 | number | title                            | file                             |
@@ -19,4 +19,4 @@ part: 8
 | 10     | Connection manager               | 10_ConnectionManager.md          |
 | 11     | RTSP to HLS - pipeline           | 11_RTSP_Pipeline.md              |
 | 12     | Summary                          | 12_Summary.md                    |
-| 13     | (Suplement) H264 codec           | 13_H264_codec.md                 |
+| 13     | (Suplement) H264 codec           | 13_H264_codec.md                 |

create_new_plugin/index.md

@@ -2,7 +2,7 @@
 title: How to create your own plugin
 description: >-
   In this short guide we provide you with an overview of how to create your own Membrane plugin and how to integrate it into your project.
-part: 4
+part: 3
 graphicPath: assets/images/Illo_create new plugin.png
 ---
 

digital_video_introduction/index.md

@@ -2,7 +2,7 @@
 title: Digital Video Introduction
 description: >-
   All you need to know to understand digital video. Written by Leonardo Moreira.
-part: 6
+part: 5
 graphicPath: assets/images/Illo_ digital video introduction.png
 ---
 

glossary/index.md

@@ -1,7 +1,7 @@
 ---
 title: Glossary
 description: Set of terms we're using in our tutorials you might want to learn more about.
-part: 7
+part: 6
 graphicPath: assets/images/Illo_glossary.png
 ---
 

h264/index.md

@@ -2,7 +2,7 @@
 title: H264 - what, why and how
 
 description: In this tutorial we will describe what is H264, why to use it and how to fetch interesting information from the H264 stream
-part: 9
+part: 8
 graphicPath:
 ---