message: Move Buffer plugin into a single config snippet
diff: @@ -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),
  