Move Buffer plugin into a single config snippet

README.md

@@ -96,7 +96,6 @@ We're happy to adjust this list according to users' needs as long as you don't
 ask for Internet Explorer support. If your environment does not support Wasm, we
 can work on a solution with swappable implementations.
 
-
 ## Webpack Configs
 
 With WebPack 5, you have to be explicit about the usage of Node.js types and
@@ -108,7 +107,14 @@ Configs for 0.28 and later:
 ```js
 module.exports = [
   {
+    // ...
+    plugins: [
       ...,
+      new webpack.ProvidePlugin({
+        Buffer: ["buffer", "Buffer"],
+      }),
+    ],
+    // ...
     resolve: {
       fallback: {
         buffer: false,
@@ -128,7 +134,14 @@ Configs for CosmJS < 0.28
 ```js
 module.exports = [
   {
+    // ...
+    plugins: [
       ...,
+      new webpack.ProvidePlugin({
+        Buffer: ["buffer", "Buffer"],
+      }),
+    ],
+    // ...
     resolve: {
       fallback: {
         buffer: false,
@@ -143,23 +156,6 @@ module.exports = [
 ];
 ```
 
-Also, in both cases you need the Buffer plugin:
-
-```ts
-module.exports = [
-  {
-   ...,
-    plugins: [
-      ...,
-      new webpack.ProvidePlugin({
-        Buffer: ["buffer", "Buffer"],
-      }),
-    ],
-    ...
-  },
-];
-```
-
 ## Roadmap
 
 We maintain a [development board](https://github.com/orgs/cosmos/projects/6),