Refine docker run command (#194)

```release-note
None
```

docs/getting-started/install/docker.md

@@ -44,7 +44,7 @@ import DockerArgs from "./slots/docker-args.md"
       -v ~/.halo2:/root/.halo2 \
       halohub/halo:2.2.0 \
       --halo.external-url=http://localhost:8090/ \
-      --halo.security.initializer.superadminuser=admin \
+      --halo.security.initializer.superadminusername=admin \
       --halo.security.initializer.superadminpassword=P@88w0rd  
     ```
 
@@ -103,6 +103,6 @@ import DockerArgs from "./slots/docker-args.md"
       -v ~/.halo2:/root/.halo2 \
       halohub/halo:2.2.0 \
       --halo.external-url=http://localhost:8090/ \
-      --halo.security.initializer.superadminuser=admin \
+      --halo.security.initializer.superadminusername=admin \
       --halo.security.initializer.superadminpassword=P@88w0rd  
     ```

docs/intro.md

@@ -41,7 +41,7 @@ docker run \
   -v ~/.halo2:/root/.halo2 \
   halohub/halo:2.2 \
   --halo.external-url=http://localhost:8090/ \
-  --halo.security.initializer.superadminuser=admin \
+  --halo.security.initializer.superadminusername=admin \
   --halo.security.initializer.superadminpassword=P@88w0rd
 ```
 

versioned_docs/version-2.1/getting-started/install/docker.md

@@ -44,7 +44,7 @@ import DockerArgs from "./slots/docker-args.md"
       -v ~/.halo2:/root/.halo2 \
       halohub/halo:2.1.0 \
       --halo.external-url=http://localhost:8090/ \
-      --halo.security.initializer.superadminuser=admin \
+      --halo.security.initializer.superadminusername=admin \
       --halo.security.initializer.superadminpassword=P@88w0rd  
     ```
 
@@ -103,6 +103,6 @@ import DockerArgs from "./slots/docker-args.md"
       -v ~/.halo2:/root/.halo2 \
       halohub/halo:2.1.0 \
       --halo.external-url=http://localhost:8090/ \
-      --halo.security.initializer.superadminuser=admin \
+      --halo.security.initializer.superadminusername=admin \
       --halo.security.initializer.superadminpassword=P@88w0rd  
     ```

versioned_docs/version-2.1/intro.md

@@ -41,7 +41,7 @@ docker run \
   -v ~/.halo2:/root/.halo2 \
   halohub/halo:2.1 \
   --halo.external-url=http://localhost:8090/ \
-  --halo.security.initializer.superadminuser=admin \
+  --halo.security.initializer.superadminusername=admin \
   --halo.security.initializer.superadminpassword=P@88w0rd
 ```
 

versioned_docs/version-2.2/getting-started/install/docker.md

@@ -44,7 +44,7 @@ import DockerArgs from "./slots/docker-args.md"
       -v ~/.halo2:/root/.halo2 \
       halohub/halo:2.2.0 \
       --halo.external-url=http://localhost:8090/ \
-      --halo.security.initializer.superadminuser=admin \
+      --halo.security.initializer.superadminusername=admin \
       --halo.security.initializer.superadminpassword=P@88w0rd  
     ```
 
@@ -103,6 +103,6 @@ import DockerArgs from "./slots/docker-args.md"
       -v ~/.halo2:/root/.halo2 \
       halohub/halo:2.2.0 \
       --halo.external-url=http://localhost:8090/ \
-      --halo.security.initializer.superadminuser=admin \
+      --halo.security.initializer.superadminusername=admin \
       --halo.security.initializer.superadminpassword=P@88w0rd  
     ```

versioned_docs/version-2.2/intro.md

@@ -41,7 +41,7 @@ docker run \
   -v ~/.halo2:/root/.halo2 \
   halohub/halo:2.2 \
   --halo.external-url=http://localhost:8090/ \
-  --halo.security.initializer.superadminuser=admin \
+  --halo.security.initializer.superadminusername=admin \
   --halo.security.initializer.superadminpassword=P@88w0rd
 ```