Fix review comments

docs/gateway/remote-gateway-readme.md

@@ -10,7 +10,6 @@ OpenClaw.app uses SSH tunneling to connect to a remote gateway. This guide shows
 
 ## Overview
 
-<p align="center">
 ```mermaid
 %%{init: {
   'theme': 'base',
@@ -47,7 +46,6 @@ flowchart TB
     end
     T --> C
 ```
-</p>
 
 ## Quick Setup
 

docs/gateway/security/index.md

@@ -797,7 +797,6 @@ Commit the updated `.secrets.baseline` once it reflects the intended state.
 
 ## The Trust Hierarchy
 
-<p align="center">
 ```mermaid
 %%{init: {
   'theme': 'base',
@@ -821,11 +820,11 @@ flowchart TB
     C -- Limited trust --> D["Strangers"]
     D -- No trust --> E["Mario asking for find ~"]
     E -- Definitely no trust 😏 --> F[" "]
-
+    
+     %% The transparent box is needed to show the bottom-most label correctly
      F:::Class_transparent_box
     classDef Class_transparent_box fill:transparent, stroke:transparent
 ```
-</p>
 
 ## Reporting Security Issues