modernise: Run new gopls modernise tool against the codebase and fix minor issues (#1826)

* modernise: Run new gopls modernise tool against codebase

* Address shazbert's nits

* apichecker, gctcli: Simplify HTML scraping functions and improve depth limit handling

* refactor: Create minSyncInterval const and update order book limit handling for binance and binanceUS

* refactor: Various slice usage improvements and rename TODO

* tranches: Revert deleteByID changes due to performance decrease

Shazbert was a F1 driver in a past lifetime 🏎️

* tranches: Simply retrieve copy

Thanks to shazbert

* documentation: Sort contributors list by contributions

* tranches: Remove deadcode in deleteByID

exchanges/exchange.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"maps"
 	"net"
 	"net/url"
 	"sort"
@@ -1292,12 +1293,8 @@ func (e *Endpoints) GetURL(key URL) (string, error) {
 // GetURLMap gets all urls for either running or default map based on the bool value supplied
 func (e *Endpoints) GetURLMap() map[string]string {
 	e.mu.RLock()
-	urlMap := make(map[string]string)
-	for k, v := range e.defaults {
-		urlMap[k] = v
-	}
-	e.mu.RUnlock()
-	return urlMap
+	defer e.mu.RUnlock()
+	return maps.Clone(e.defaults)
 }
 
 // GetCachedOpenInterest returns open interest data if the exchange