fix(docs): fix mermaid syntax error

[CaptainWang98]

Description

A render error shows up in docs here in preview mode.

In Mermaid flowcharts, when node labels contain special characters (such as brackets, Unicode characters, etc.), you should use double quotes to surround the text instead of using the special characters directly within the square brackets.

reference: https://mermaid.js.org/syntax/flowchart.html#special-characters-that-break-syntax

core/arch-doc/architecture-overview.md

Lines 223 to 247 in 1af2c8a

	### Runtime Convenience Layer
	```mermaid
	flowchart LR
	subgraph "Runtime Package"
	GlobalAPI[Global API Functions]
	InstanceManager[Instance Manager]
	BuildIntegration[Build Integration]
	end
	subgraph "Core APIs"
	LoadRemote[loadRemote()]
	LoadShare[loadShare()]
	Init[init()]
	RegisterRemotes[registerRemotes()]
	end
	GlobalAPI --> LoadRemote
	GlobalAPI --> LoadShare
	GlobalAPI --> Init
	GlobalAPI --> RegisterRemotes
	InstanceManager --> GlobalAPI
	BuildIntegration --> InstanceManager
	```

Related Issue

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist

• I have added tests to cover my changes.
• All new and existing tests passed.
• I have updated the documentation.

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