Python: Fix typos.

[stefan521]

Motivation and Context

Description

Fixed a bunch of typos.

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the SK Contribution Guidelines and the pre-submission formatting script raises no violations
• All unit tests pass, and I have added new tests where possible
• I didn't break anyone 😄

[markwallace-microsoft]

Python 3.10 Test Coverage Report •

File	Stmts	Miss	Cover	Missing
semantic_kernel/connectors/ai/ollama/services
ollama_chat_completion.py	71	6	92%	58, 94, 114, 132, 165, 184
ollama_text_completion.py	43	1	98%	94
semantic_kernel/connectors/ai/open_ai/services
azure_chat_completion.py	94	34	64%	149, 155–156, 165–166, 171–188, 192–199, 211–222
semantic_kernel/contents
function_result_content.py	57	12	79%	50, 55, 65, 80, 92, 106, 111, 118–122
streaming_chat_message_content.py	83	2	98%	192–193
streaming_text_content.py	14	4	71%	31, 39, 41, 43
text_content.py	22	2	91%	40, 47
semantic_kernel/core_plugins
time_plugin.py	84	6	93%	61, 71–72, 181–182, 231
semantic_kernel/planners/function_calling_stepwise_planner
function_calling_stepwise_planner.py	110	43	61%	125–215, 249–254
TOTAL	6080	872	86%

Python 3.10 Unit Test Overview

Tests	Skipped	Failures	Errors	Time
1374	1 💤	0 ❌	0 🔥	14.275s ⏱️