docs: update dynamic repository count and fix math block delimiters

[Devanik21]

• Updated the total repository count from 257 to 268 in docs/ecosystem_monograph.md to reflect current dynamic GitHub statistics.
• Fixed malformed LaTeX math block delimiters in docs/ecosystem_monograph.md, replacing generated numerical artifacts (e.g., 2258 ... 2258) with standard $$ ... $$ delimiters to ensure proper Markdown rendering.

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PR created automatically by Jules for task 7341074123914696022 started by @Devanik21

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[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request updates the ecosystem monograph to reflect the current number of repositories and fixes rendering issues with LaTeX math blocks. The changes ensure the document accurately represents the state of the AI Research Ecosystem and displays mathematical notations correctly.

Highlights

• Repository Count Update: The total repository count in the ecosystem monograph was updated from 257 to 268 to reflect the current GitHub statistics.
• LaTeX Math Delimiter Fix: Malformed LaTeX math block delimiters were corrected by replacing numerical artifacts with standard '$$ ... $$' delimiters for proper Markdown rendering.

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Changelog

• docs/ecosystem_monograph.md
  • Updated repository count to 268.
  • Fixed malformed LaTeX math block delimiters.

Activity

• The repository count was updated to reflect the current number of repositories.
• LaTeX math delimiters were fixed to ensure proper rendering.

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Code Review

This pull request updates the docs/ecosystem_monograph.md file. The changes include updating the repository count from 257 to 268 in several places to reflect current statistics. Additionally, it fixes formatting for LaTeX math blocks by replacing numerical artifacts with the correct $$ delimiters, ensuring proper rendering. The changes are consistent and correctly applied across multiple entries in the monograph file.

_{Note: Security Review has been skipped due to the limited scope of the PR.}