Make ~/bin before attempting to write to it

Co-authored-by: Albert <26584478+albertteoh@users.noreply.github.com>

monitoring/jaeger-mixin/README.md

@@ -3,7 +3,7 @@
 The Prometheus monitoring mixin for Jaeger provides a starting point for people wanting to monitor Jaeger using Prometheus, Alertmanager, and Grafana. To use it, you'll need [`jsonnet`](https://github.com/google/go-jsonnet) and [`jb` (jsonnet-bundler)](https://github.com/jsonnet-bundler/jsonnet-bundler). They can be installed using `go get`, as follows:
 
 ```console
-$ curl -sL https://github.com/google/go-jsonnet/releases/download/v0.17.0/go-jsonnet_0.17.0_Linux_x86_64.tar.gz | tar -C ~/bin/ -xzf -
+$ mkdir -p ~/bin && curl -sL https://github.com/google/go-jsonnet/releases/download/v0.17.0/go-jsonnet_0.17.0_Linux_x86_64.tar.gz | tar -C ~/bin/ -xzf -
 $ curl -sLo ~/bin/jb https://github.com/jsonnet-bundler/jsonnet-bundler/releases/download/v0.4.0/jb-linux-amd64
 $ chmod +x ~/bin/jb
 ```