Update README.md

Author: alandefreitas

documentation/README.md

@@ -291,7 +291,7 @@ The `error bar` object includes extra lines to represent error around data point
 The `filled area` object creates a polygon filling the area between the $x$ axis and each line. Each of these plots can be created by
 
 ```cpp
-vector<vector<int>> Y = {{1, 3, 4, 0}, {2, 5, 4, 7}, {6, 4, 5, 3}};
+vector<vector<int>> Y = { {1, 3, 4, 0}, {2, 5, 4, 7}, {6, 4, 5, 3} };
 area(Y, -4, stacked);
 ```
 
@@ -467,7 +467,7 @@ In an abstract graph, the vertices have no specific position in space. Mathemati
 The implementation of the Kamada Kawai and Fruchterman-Reingold algorithms depend on the NodeSoup library. The next Figure exemplifies the Undirected Graph generated by
 
 ```cpp
-vector<pair<size_t, size_t>> edges = {{0, 1},
+vector<pair<size_t, size_t>> edges ={ {0, 1},
                                       {0, 2},
                                       {1, 2},
                                       {1, 4},
@@ -479,7 +479,7 @@ vector<pair<size_t, size_t>> edges = {{0, 1},
                                       {8, 9},
                                       {7, 9},
                                       {8, 7},
-                                      {9, 10}};
+                                      {9, 10} };
 vector<double> weights = {4,4,2,1,1,4,2,1,3,3,2,4,1};
 graph(edges)->edge_labels(weights);
 ```
@@ -663,7 +663,8 @@ Any object that has the functions `begin` and `end` are considered iterable rang
 These conversions also work on ranges of ranges:
 
 ```cpp
-vector<set<int>> Y = {{6,3,8,2,5},{6,3,5,8,2}};
+vector<set<int>> Y = { {6, 3, 8, 2, 5}, {6, 3, 5, 8, 2} 
+};
 plot(Y);
 ```
 
@@ -1137,4 +1138,4 @@ The paper presented **Matplot++**, an alternative for data visualization in C++.
 
 * Zaitsev S (2020). Webview. URL: [https://github.com/zserge/webview](https://github.com/zserge/webview).
 
-* Zakai A (2011). "Emscripten: an LLVM-to-JavaScript compiler." In Proceedings of the ACM international conference companion on Object oriented programming systems languages and applications companion, pp. 301-312.
+* Zakai A (2011). "Emscripten: an LLVM-to-JavaScript compiler." In Proceedings of the ACM international conference companion on Object oriented programming systems languages and applications companion, pp. 301-312.