[MC-277945] Incorrect verb form in "Elytra swooshes" subtitle

The Bug:

The string subtitles.item.elytra.flying uses an incorrect verb form. "Elytra" is the plural form of "Elytron," so the correct phrasing should be "Elytra swoosh" rather than "Elytra swooshes."

Affected String:

Translation Key	Current String	Expected String	String URL on Crowdin
subtitles.item.elytra.flying	Elytra swooshes	Elytra swoosh	https://crowdin.com/editor/minecraft/10038/enus-uk#5382646

Note: Words in GREEN are correct, while words in RED are incorrect.

Steps to Reproduce:

Use the following command to display the affected string:
```
/tellraw @s {"translate":"subtitles.item.elytra.flying"}
```
Observe if the string uses the singular or plural form.

Observed Behavior:

The string currently uses "Elytra swooshes," which is a singular verb form.

Expected Behavior:

The string should use the plural verb form and display as "Elytra swoosh."

Note:

The string subtitles.item.armor.equip_elytra uses the correct verb form.