resolve PR comments

Author: emilyychenn

Sources/SwiftDocC/Model/Rendering/RenderSectionTranslator/ParametersSectionTranslator.swift

@@ -20,9 +20,7 @@ struct ParametersSectionTranslator: RenderSectionTranslator {
         translateSectionToVariantCollection(
             documentationDataVariants: symbol.parametersSectionVariants
         ) { _, parameters in
-            guard !parameters.parameters.isEmpty else {
-                return ParameterRenderSection(name: "", content: []) as? RenderSection
-            }
+            guard !parameters.parameters.isEmpty else { return nil }
 
             return ParametersRenderSection(
                 parameters: parameters.parameters
@@ -31,14 +29,11 @@ struct ParametersSectionTranslator: RenderSectionTranslator {
                             MarkupContainer(parameter.contents)
                         ) as! [RenderBlockContent]
 
-                        guard !parameterContent.isEmpty && parameterContent.count != 0 else {
+                        guard !parameterContent.isEmpty else {
                             return ParameterRenderSection(name: parameter.name, content: parameterContent)
                         }
 
-                        var capitalizedParameterContent = [parameterContent[0].withFirstWordCapitalized]
-                        if parameters.parameters.count > 1 {
-                            capitalizedParameterContent = [parameterContent[0].withFirstWordCapitalized] + parameterContent[1...]
-                        }
+                        let capitalizedParameterContent = [parameterContent[0].withFirstWordCapitalized] + parameterContent[1...]
 
                         return ParameterRenderSection(name: parameter.name, content: capitalizedParameterContent)
                     }