refactor: convert UpdateSearchText to expression-bodied method and remove blank line

Author: aalmada

src/ApiService/BookStore.ApiService/Endpoints/CategoryEndpoints.cs

@@ -13,7 +13,6 @@ namespace BookStore.ApiService.Endpoints;
 public static class CategoryEndpoints
 {
 
-
     public static RouteGroupBuilder MapCategoryEndpoints(this RouteGroupBuilder group)
     {
         _ = group.MapGet("/", GetCategories)

src/ApiService/BookStore.ApiService/Projections/BookSearchProjection.cs

@@ -152,15 +152,13 @@ public async Task Apply(AuthorUpdated @event, BookSearchProjection projection, I
     }
 
     // Helper method to compute SearchText from all searchable fields
-    static void UpdateSearchText(BookSearchProjection projection)
-    {
+    static void UpdateSearchText(BookSearchProjection projection) =>
         // Use string interpolation to avoid List<string> allocation
         projection.SearchText =
             $"{projection.Title} " +
             $"{projection.Isbn ?? string.Empty} " +
             $"{projection.PublisherName ?? string.Empty} " +
             $"{projection.AuthorNames}".Trim();
-    }
 
     // Projection will be deleted on BookSoftDeleted (configured in constructor)
     // Projection will be recreated on BookRestored by replaying the stream