Update infrasturcture.md to make mermaid work

docs/brainstorm/infrasturcture.md

@@ -25,11 +25,11 @@ At the lowest level of our system we are showing how the software is designed. T
 ``` mermaid
 classDiagram
 
-Node --> Raspberry pi : Websocket
-Raspberry pi --> Website : getData
-Raspberry pi <--> EnqueteNode : Websocket
+    Node --> Raspberry pi : Websocket
+    Raspberry pi --> Website : getData
+    Raspberry pi <--> EnqueteNode : Websocket
 
-namespace Server {
+    namespace Server {
         class Raspberry pi {
             +MariaDB
             +Apache2
@@ -48,9 +48,9 @@ namespace Server {
             collectData()
 
         }
-}
+    }
 
-namespace User {
+    namespace User {
         class Website {
             +Co2
             +Temperature
@@ -62,6 +62,7 @@ namespace User {
             +Settings
             GetData()
         }
+        
         class EnqueteNode {
             +Co2
             +Temperature
@@ -78,5 +79,5 @@ namespace User {
 
         }
 
-}
+    }
 ```