Prevent localization of format specifiers in TimeSpan format strings documentation

[Copilot]

Fix overlocalization of formatting symbols in TimeSpan format strings documentation

• Revert previous changes that wrapped output strings
• Wrap format specifiers in the first column of the table with backticks
• Update format specifier references in table links
• Update all section headings with backtick-wrapped format specifiers
• Update all inline format specifier references throughout the document
• Fix YAML frontmatter that was accidentally modified
• Remove quotes from individual character references in descriptions
• Verify changes with markdown linting (passes with 0 errors)

Summary

Successfully wrapped all format specifiers (e.g., "d", "%d", "hh", etc.) with backticks throughout the document per @gewarren's feedback. Also fixed character count descriptions to reference individual characters without quotes (e.g., with seven F characters instead of with seven "F" characters).

Changes ensure localization systems will not translate the format specifier strings themselves, fixing the Korean localization issue where format specifiers were being incorrectly translated.

Original prompt

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This section details on the original issue you should resolve

<issue_title>[UUF] Overlocalization of formatting symbols</issue_title>
<issue_description>### Type of issue

Other (describe below)

Description

Even the formatting symbols in the format are translated into Korean and cannot be referenced.

Page URL

https://learn.microsoft.com/ko-kr/dotnet/standard/base-types/custom-timespan-format-strings

Content source URL

https://github.com/dotnet/docs/blob/main/docs/standard/base-types/custom-timespan-format-strings.md

Document Version Independent Id

1f663894-736b-ae1c-92c8-3eff42e68150

Platform Id

e3461880-bb16-8dd6-5efc-ff989e369c6a

Article author

@adegeo

Metadata

• ID: 59db63c5-ec55-ad7d-9a4c-b08a1e2510eb
• PlatformId: e3461880-bb16-8dd6-5efc-ff989e369c6a
• Service: dotnet-fundamentals

Related Issues</issue_description>

<agent_instructions>Please use backticks to prevent formatting symbols from being localized.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes [UUF] Overlocalization of formatting symbols #50742

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Internal previews

📄 File	🔗 Preview link
docs/standard/base-types/custom-timespan-format-strings.md	docs/standard/base-types/custom-timespan-format-strings

[Copilot]

Pull request overview

This PR fixes a Korean localization issue where TimeSpan format specifiers were being incorrectly translated. The solution wraps all format specifiers with backticks throughout the documentation to prevent the localization system from translating these technical strings.

Key changes:

• Wrapped all format specifiers in the reference table with backticks (e.g., "d", "%d", "hh")
• Updated all section headings to use backtick-wrapped format specifiers
• Updated all inline references to format specifiers throughout the document body