fix minor typos and changes in readme

[kurshakuz]

Motivation

fix minor typo

Modification

text edit

BC-breaking (Optional)

none

Use cases (Optional)

none

Checklist

1. Pre-commit or other linting tools are used to fix the potential lint issues.
2. The modification is covered by complete unit tests. If not, please add more unit test to ensure the correctness.
3. The documentation has been modified accordingly, like docstring or example tutorials.

[CLAassistant]

All committers have signed the CLA.

[kurshakuz]

Fixed the TFA and FSCE arguments for reshape tools. It currently accepts random_init instead of randinit

[OpenMMLab-Assistant-004]

Hi @kurshakuz ！We are grateful for your efforts in helping improve mmfewshot open-source project during your personal time.

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