docs: add MEMORY commands (DOCTOR, MALLOC-STATS, PURGE, STATS)

[Aryex]

Summary

Add documentation for MEMORY DOCTOR, MEMORY MALLOC-STATS, MEMORY PURGE, and MEMORY STATS commands now available in Python, Node.js, Java, Go, and C# clients.

⚠️ Attention: This PR was generated automatically. Verify that all relevant pages have been updated.

Source Commits

• 1b0ffb1 — Add MEMORY commands, remove LATENCY/MEMORY batch support (Java, Python, Node, Go) (#6307)
• 80ced93 — Add MEMORY DOCTOR, MALLOC-STATS, PURGE, and STATS commands (C#) (C# #443)

Changes

• Created new documentation page how-to/monitoring/memory-commands.mdx covering all 4 MEMORY commands with examples for standalone and cluster usage across Python, Java, Node.js, Go, and C#
• Updated available-commands.json to mark MEMORY DOCTOR, MEMORY MALLOC-STATS, MEMORY PURGE, and MEMORY STATS as available for Python, Node.js, Java, Go, and C#
• Added sidebar entry for the new MEMORY commands page under Monitoring
• Added C# code examples showing MemoryDoctorAsync, MemoryMallocStatsAsync, MemoryPurgeAsync, and MemoryStatsAsync with both standalone and cluster client usage
• Added C# column to API Reference tables

Context

valkey-glide #6307 adds first-class MEMORY command support across Java, Python, Node.js, and Go clients. C# #443 adds the same commands to the C# client with strongly-typed MemoryStats response model and ClusterValue<T> cluster variants. The documentation page covers all supported languages and notes the batch API exclusion.

cc @currantw

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This PR was generated by the automated documentation pipeline.

[Aryex]

📝 Updated PR description with 80ced93 — Add MEMORY DOCTOR, MALLOC-STATS, PURGE, and STATS commands (C# #443)

Changes in this update:

• Added C# code examples for all 4 MEMORY commands (standalone + cluster with routing)
• Updated available-commands.json to mark C# as available
• Added C# column to API Reference tables
• Updated intro paragraph to include C#