docs: add missing --all argument to contributing.md (#121)

diff --git a/.github/contributing.md b/.github/contributing.md
index f7fd73a600ffd785d4842d0a10805bbd247a47b4..8f1eb4d5bc5f7008989418db96362f80f6a75d84 100644 (file)
--- a/.github/contributing.md
+++ b/.github/contributing.md
@@ -66,7 +66,7 @@ Packages to build can be specified with fuzzy matching:
 yarn build runtime-core
 
 # build all packages matching "runtime"
-yarn build runtime
+yarn build runtime --all
 ```
 
 By default, each package will be built in multiple distribution formats as specified in the `buildOptions.formats` field in its `package.json`. These can be overwritten via the `-f` flag. The following formats are supported: