fix(crystal): fix typos in Crystal templates

Author: n-rodriguez

modules/openapi-generator/src/main/resources/crystal/api.mustache

@@ -87,7 +87,7 @@ module {{moduleName}}
       {{/maxLength}}
       {{#minLength}}
       if @api_client.config.client_side_validation && {{^required}}!{{{paramName}}}.nil? && {{/required}}{{{paramName}}}.to_s.size < {{{minLength}}}
-        raise ArgumentError.new("invalid value for \"{{{paramName}}}\" when calling {{classname}}.{{operationId}}, the character length must be great than or equal to {{{minLength}}}.")
+        raise ArgumentError.new("invalid value for \"{{{paramName}}}\" when calling {{classname}}.{{operationId}}, the character length must be greater than or equal to {{{minLength}}}.")
       end
 
       {{/minLength}}

modules/openapi-generator/src/main/resources/crystal/partial_model_generic.mustache

@@ -105,7 +105,7 @@
       {{/maxLength}}
       {{#minLength}}
       if {{^required}}!@{{{name}}}.nil? && {{/required}}@{{{name}}}.to_s.size < {{{minLength}}}
-        invalid_properties.push("invalid value for \"{{{name}}}\", the character length must be great than or equal to {{{minLength}}}.")
+        invalid_properties.push("invalid value for \"{{{name}}}\", the character length must be greater than or equal to {{{minLength}}}.")
       end
 
       {{/minLength}}
@@ -226,7 +226,7 @@
       {{/maxLength}}
       {{#minLength}}
       if {{^required}}!{{{name}}}.nil? && {{/required}}{{{name}}}.to_s.size < {{{minLength}}}
-        raise ArgumentError.new("invalid value for \"{{{name}}}\", the character length must be great than or equal to {{{minLength}}}.")
+        raise ArgumentError.new("invalid value for \"{{{name}}}\", the character length must be greater than or equal to {{{minLength}}}.")
       end
 
       {{/minLength}}