[Enhancement] If Keyword contains an ending punctuation like period exclamation point or question mark be able to find it in Subheading

[Pcosta88]

If my keyword has an ending punctuation, Yoast considers it the ending of a sentence. This can affect the keyword analysis.

1.Have keyword with an ending mark like FRITZ!App WLAN

2.Add it in a subheading

**3.But outputs notification that it cannot find the keyword: Keyphrase in subheading: Use more keyphrases or synonyms in your higher-level subheadings!
**

Therefore, If Keyword contains an ending punctuation like period exclamation point or question mark be able to find it in a subheading

This can help improve UX and Content SEO

[Pcosta88]

related #2220

[Pcosta88]

related https://github.com/Yoast/YoastSEO.js/issues/2219

[Pcosta88]

related #2218

[Pcosta88]

related Yoast/wordpress-seo#2163

[Pcosta88]

Please inform the customer of conversation # 496015 when this conversation has been closed.

[jdevalk]

Closing.