fix extra headers label/explainer (#2762)

skyvern-frontend/src/routes/tasks/detail/TaskParameters.tsx

@@ -121,7 +121,7 @@ function TaskParameters() {
         <div className="w-72">
           <h1 className="text-lg">Extra HTTP Headers</h1>
           <h2 className="text-base text-slate-400">
-            Specify some self defined HTTP requests headers in Dict format
+            Specify some self-defined HTTP requests headers
           </h2>
         </div>
         <div className="w-full">

skyvern-frontend/src/routes/workflows/editor/nodes/StartNode/StartNode.tsx

@@ -139,7 +139,7 @@ function StartNode({ id, data }: NodeProps<StartNode>) {
                     <div className="space-y-2">
                       <div className="flex items-center gap-2">
                         <Label>Extra HTTP Headers</Label>
-                        <HelpTooltip content="Specify some self defined HTTP requests headers in Dict format" />
+                        <HelpTooltip content="Specify some self-defined HTTP requests headers" />
                       </div>
                       <KeyValueInput
                         value={inputs.extraHttpHeaders ?? null}