fix(openapi): Remove trailing characters in descriptions #1406

Job	Run time
Check deny.toml bans	28s
Check Cargo.lock is up to date	1m 39s
Check deny.toml bans --features default-release-binaries	33s
Check deny.toml bans --all-features	30s
Install zebrad from lockfile without cache on ubuntu-latest	9m 27s
Check deny.toml sources	30s
Check deny.toml sources --features default-release-binaries	30s
Test stable on ubuntu-latest	30m 45s
Check deny.toml sources --all-features	29s
Test beta on ubuntu-latest	30m 45s
Test stable on macos-latest	34m 28s
Test stable on windows-latest	46m 49s
Check for unused dependencies	10s
Test beta on windows-latest	47m 16s
Open or update issues for OS integration failures	0s
	3h 24m 19s

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