Apply suggestions from code review

Co-authored-by: Sunny Ripert <[email protected]>

lib/money/money.rb

@@ -310,7 +310,7 @@ def self.from_amount(amount, currency = default_currency, options = {})
  raise ArgumentError, "'amount' must be numeric" unless Numeric === amount
 
  currency = Currency.wrap(currency) || Money.default_currency
- raise Currency::NoCurrency, 'must be provide a currency' if currency.nil?
+ raise Currency::NoCurrency, 'must provide a currency' if currency.nil?
 
  value = amount.to_d * currency.subunit_to_unit
  new(value, currency, options)
@@ -356,7 +356,7 @@ def initialize(obj, currency = Money.default_currency, options = {})
 
  # BigDecimal can be Infinity and NaN, money of that amount does not make sense
  raise ArgumentError, 'must be initialized with a finite value' unless @fractional.finite?
- raise Currency::NoCurrency, 'must be provide a currency' if @currency.nil?
+ raise Currency::NoCurrency, 'must provide a currency' if @currency.nil?
  end
 
  # Assuming using a currency using dollars: