Fixed lint issues and missing documentation

internal/findATender/findATender.go

@@ -2,6 +2,7 @@ package findATender
 
 import (
 	"context"
+	"log/slog"
 	"time"
 
 	"git.avsdev.uk/Go/job-search/internal/config"
@@ -9,6 +10,8 @@ import (
 	resty "resty.dev/v3"
 )
 
+// FindATender is a client for the Find a Tender OCDS API (or the mock
+// server). Create it with New and call Shutdown when finished with it.
 type FindATender struct {
 	httpClient *resty.Client
 	config     *config.JobSearchConfig
@@ -47,9 +50,12 @@ func (ft *FindATender) With(ctx context.Context) *FindATender {
 	return &copied
 }
 
-// Shutdown closes the client's HTTP connections.
+// Shutdown closes the client's HTTP connections. A failure to close is
+// logged, as there is nothing a caller could do about it.
 func (ft *FindATender) Shutdown() {
-	ft.httpClient.Close()
+	if err := ft.httpClient.Close(); err != nil {
+		slog.Warn("findATender: closing HTTP client", "error", err)
+	}
 }
 
 // FetchOnce fetches the first page of releases updated since since, and