Update dictionary.py

[jazzpher]

• Removed unnecessary imports and code: Removed the "import json" line, as it was not needed in this code snippet.
• Simplified the conditional checks: Consolidated the three conditional checks for lowercase, title case, and uppercase into a single check using the "word.lower()" method.
• Avoided multiple calls to "get_close_matches": Stored the result of "get_close_matches" in a variable to avoid redundant calls.
• Used "input" function just once: Eliminated the need to use the "input" function multiple times for the same user prompt.
• Cleaned up and standardized user prompts and responses: Ensured consistent messages and prompts for the user to improve user experience.

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