Update index.md

Author: rabestro

docs/index.md

@@ -65,11 +65,11 @@ Tests are written in groove language. For unit testing, the Spock framework was
 ### Small Graph Sample
 
 ```groovy
-        def graph = Graph.of([
+        def graph = Graph.of [
                 A: [B: 7, C: 2],
                 B: [A: 3, C: 5],
                 C: [A: 1, B: 3]
-        ])
+        ]
 ```
 
 ![Small Graph](assets/small.gif)
@@ -78,21 +78,21 @@ Tests are written in groove language. For unit testing, the Spock framework was
 ### Medium Graph Sample
 
 ```groovy
-        def graph = Graph.of([
+        def graph = Graph.of [
                 A: [B: 5],
                 B: [A: 5, C: 10],
                 C: [B: 20, D: 5],
                 D: [E: 5],
                 E: [B: 5]
-        ])
+        ]
 ```
 
 ![Medium Graph](assets/medium.gif)
 
 ### Complex Graph Sample
 
 ```groovy
-        def graph = Graph.of([
+        def graph = Graph.of [
                 A: [B: 5, H: 2],
                 B: [A: 5, C: 7],
                 C: [B: 7, D: 3, G: 4],
@@ -101,7 +101,7 @@ Tests are written in groove language. For unit testing, the Spock framework was
                 F: [G: 6],
                 G: [C: 4],
                 H: [G: 3]
-        ])
+        ]
 ```
 ![Complex Graph](assets/complex.gif)