chore(docs): update client docstring

[stainless-app]

---

EntelligenceAI PR Summary

Minor corrections were made to typos in the docstrings of the src/julep/_client.py file.

[entelligence-ai-pr-reviews]

Walkthrough

Minor typo corrections in docstrings of src/julep/_client.py.

Entelligence.ai can learn from your feedback. Simply add 👍 / 👎 emojis to teach it your preferences. More shortcuts below

Emoji Descriptions:

• ⚠️ Potential Issue - May require further investigation.
• 🔒 Security Vulnerability - Fix to ensure system safety.
• 💻 Code Improvement - Suggestions to enhance code quality.
• 🔨 Refactor Suggestion - Recommendations for restructuring code.
• ℹ️ Others - General comments and information.

Interact with the Bot:

• Send a message or request using the format:
  @bot + *your message*

Example: @bot Can you suggest improvements for this code?

• Help the Bot learn by providing feedback on its responses.
  @bot + *feedback*

Example: @bot Do not comment on `save_auth` function !

[entelligence-ai-pr-reviews]

LGTM 👍