Fix README examples: use single quotes around values containing !

[solovey23]

Summary

• Fix dquote> mode when copy-pasting README examples in bash

Problem

Bash history expansion treats ! inside double quotes specially. The two affected examples:

• --subject "Welcome!" (Transactional sending example)
• --body-html "<h1>Hi!</h1>" (Templates example)

When copy-pasted into an interactive bash shell, these trigger history expansion and leave the shell waiting for a closing " (dquote> prompt).

Fix

Switch to single quotes for the affected values — single quotes are always literal in bash and are the correct choice for values that don't need variable interpolation.

Test plan

• Copy-paste the updated examples directly into a bash terminal — no dquote> prompt

🤖 Generated with Claude Code

Summary by CodeRabbit

• Documentation
  • Updated README CLI command examples to consistently use single quotes for argument values in transactional send and templates create commands.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 77478ee5-7945-4f89-a677-29c155a40422

📥 Commits

Reviewing files that changed from the base of the PR and between 8816c52 and 7ed3715.

📒 Files selected for processing (1)

• README.md

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📝 Walkthrough

Walkthrough

Documentation updates to README.md examples, converting double-quoted argument values to single-quoted format in CLI commands for transactional send and templates create operations.

Changes

Cohort / File(s)	Summary
Documentation Examples README.md	Updated CLI command examples to use single-quoted argument values for --subject, --html, and --body-html parameters in transactional send and templates create commands.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

Quotes have shifted from double to single, ✨
The examples now sparkle and gently jingle,
CLI commands dressed in apostrophe's grace,
A cleaner appearance in every case! 🐰

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: converting double quotes to single quotes in README examples to prevent Bash history expansion with exclamation marks.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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