refactor: search controller to convert query to lowercase

internal/controller/search.go

@@ -12,7 +12,7 @@ import (
 
 func SearchQuery(c *fiber.Ctx) error {
 	query := c.Params("query")
-	query = strings.TrimSpace(query)
+	query = strings.TrimSpace(strings.ToLower(query))
 
 	terms, queryType := parseQuery(query)
 	results := search.Search(terms, queryType, index.Index, index.DocFreq, len(index.Documents))

main.go

@@ -6,7 +6,8 @@ import (
 )
 
 func main() {
-	index.TestIndex()
+	// Initialize Index
+	index.CreateIndex()
 
 	// Start HTTP Server
 	http.StartService()