Fix --exclude-* in README.md

[Zeecka]

Fix --exclude-* in README.md

What will it do?

Fix flags inconsistency for --exclude-* in README.md

Requirements

• Add your name to CONTRIBUTORS.md
• If this is a new feature, then please add some additional information about it to CHANGELOG.md (--> N/A)

[I21b]

lib/parse/cmdline.py

113        "--exclude-extensions",
220        "--exclude-subdirs",
236        "--exclude-status",
243        "--exclude-sizes",
250        "--exclude-text",
257        "--exclude-regex",
264        "--exclude-redirect",
270        "--exclude-response",

[Gowza68]

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