fix(openapi): Remove trailing characters in descriptions #1405

Job	Run time
Check Cargo.lock is up to date	1m 16s
Install zebrad from lockfile without cache on ubuntu-latest	7m 42s
Test stable on ubuntu-latest	7m 38s
Test beta on ubuntu-latest	7m 41s
Test stable on macos-latest	7m 43s
Test stable on windows-latest	7m 25s
Test beta on windows-latest	7m 26s
Check deny.toml bans	28s
Check for unused dependencies	7s
Check deny.toml bans --features default-release-binaries	27s
Check deny.toml bans --all-features	27s
Check deny.toml sources	32s
Check deny.toml sources --features default-release-binaries	29s
Check deny.toml sources --all-features	27s
Open or update issues for OS integration failures	1s
	49m 49s

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