docs: Add info about a reproducible build with dual-wasm support

Author: danielhjacobs

web/README.md

@@ -105,7 +105,8 @@ In this project, you may run the following commands to build all packages:
     -   You may also use `npm run build:debug` to disable Webpack optimizations and activate the (extremely verbose) ActionScript debugging output.
     -   There is `npm run build:dual-wasm` as well, to build a second WebAssembly module that disables all supported WebAssembly extensions,
         potentially resulting in support for more browsers, at the expense of longer build time.
-    -   `npm run build:repro` enables reproducible builds. Note that this also requires a `version_seal.json`, which is not provided in the normal Git repository - only specially-marked reproducible source archives. Running this without a version seal will generate one based on the current state of your environment.
+    -   `npm run build:repro` enables reproducible builds with the default WASM module. Note that this also requires a `version_seal.json`, which is not provided in the normal Git repository - only specially-marked reproducible source archives. Running this without a version seal will generate one based on the current state of your environment.
+    -   `npm run build:dual-wasm-repro` enables reproducible builds with both WASM modules. Note that this also requires a `version_seal.json`, which is not provided in the normal Git repository - only specially-marked reproducible source archives. Running this without a version seal will generate one based on the current state of your environment.
     -   You will also need to run `rustup component add rust-src` with either of the previous two commands since we rebuild std for the vanilla WASM module.
 
 From here, you may follow the instructions to [use Ruffle on your website](packages/selfhosted/README.md),