Docs: Fix help message typo optiona -> optional
Docs: Fix help message typo optiona -> optional

Github-Pull: #14056
Rebased-From: 7d0a8ad3103200145ab2e73368c3b8345a66c15d

gjhiggins/vcoincore,ElementsProject/elements,BTCGPU/BTCGPU,gjhiggins/vcoincore,ahmedbodi/vertcoin,vmp32k/litecoin,thrasher-/litecoin,GroestlCoin/bitcoin,gjhiggins/vcoincore,vertcoin/vertcoin,GroestlCoin/GroestlCoin,qtumproject/qtum,gjhiggins/vcoincore,thrasher-/litecoin,GroestlCoin/bitcoin,BTCGPU/BTCGPU,vertcoin/vertcoin,guncoin/guncoin,guncoin/guncoin,digibyte/digibyte,guncoin/guncoin,gjhiggins/vcoincore,ElementsProject/elements,qtumproject/qtum,GroestlCoin/GroestlCoin,qtumproject/qtum,ElementsProject/elements,BTCGPU/BTCGPU,h4x3rotab/BTCGPU,vertcoin/vertcoin,GroestlCoin/GroestlCoin,ahmedbodi/vertcoin,digibyte/digibyte,lbryio/lbrycrd,lbryio/lbrycrd,GroestlCoin/bitcoin,Bushstar/UFO-Project,guncoin/guncoin,vmp32k/litecoin,gjhiggins/vcoincore,GroestlCoin/GroestlCoin,digibyte/digibyte,digibyte/digibyte,vertcoin/vertcoin,h4x3rotab/BTCGPU,ElementsProject/elements,GroestlCoin/bitcoin,lbryio/lbrycrd,digibyte/digibyte,digibyte/digibyte,ahmedbodi/vertcoin,lbryio/lbrycrd,vmp32k/litecoin,vmp32k/litecoin,guncoin/guncoin,qtumproject/qtum,thrasher-/litecoin,GroestlCoin/GroestlCoin,thrasher-/litecoin,lbryio/lbrycrd,guncoin/guncoin,ahmedbodi/vertcoin,lbryio/lbrycrd,GroestlCoin/bitcoin,thrasher-/litecoin,Bushstar/UFO-Project,vertcoin/vertcoin,Bushstar/UFO-Project,GroestlCoin/bitcoin,qtumproject/qtum,ahmedbodi/vertcoin,h4x3rotab/BTCGPU,GroestlCoin/GroestlCoin,qtumproject/qtum,qtumproject/qtum,Bushstar/UFO-Project,Bushstar/UFO-Project,BTCGPU/BTCGPU,vmp32k/litecoin,Bushstar/UFO-Project,ElementsProject/elements,ahmedbodi/vertcoin,lbryio/lbrycrd,ElementsProject/elements,BTCGPU/BTCGPU,h4x3rotab/BTCGPU,vertcoin/vertcoin,thrasher-/litecoin,h4x3rotab/BTCGPU,vmp32k/litecoin,BTCGPU/BTCGPU,h4x3rotab/BTCGPU