fix more doc typos

site/using-weave/dynamically-attach-containers.md

@@ -14,7 +14,7 @@ To illustrate these scenarios, imagine a netcat service running in a container o
 
 Where, 
 
- *  `C=$(Docker run -e WEAVE_CIDR=none -dti ubuntu)` is a variable for the subnet on which to attach
+ *  `C=$(docker run -e WEAVE_CIDR=none -dti ubuntu)` is a variable for the subnet on which to attach
  *  `weave attach` – the Weave Net command to attach to the specified subnet, which takes the variable for the subnet
  *  `10.2.1.3` - the allocated IP address output by `weave attach` and in this case, represents the default subnet
 

site/using-weave/manual-ip-address.md

@@ -21,14 +21,14 @@ For example, in the example, $HOST1 and $HOST2, in CIDR notation you could run y
 On `$HOST1`:
 
 ~~~bash
-host1$ Docker run -e WEAVE_CIDR=10.2.1.1/24 -ti ubuntu
+host1$ docker run -e WEAVE_CIDR=10.2.1.1/24 -ti ubuntu
 root@7ca0f6ecf59f:/#
 ~~~
 
 And $HOST2:
 
 ~~~bash
-host2$ Docker run -e WEAVE_CIDR=10.2.1.2/24 -ti ubuntu
+host2$ docker run -e WEAVE_CIDR=10.2.1.2/24 -ti ubuntu
 root@04c4831fafd3:/#
 ~~~