chore: Fix linter findings for errorlint (part1)

cmd/telegraf/main.go

@@ -196,7 +196,7 @@ func runApp(args []string, outputBuffer io.Writer, pprof Server, c TelegrafConfi
 			err := PrintInputConfig(cCtx.String("usage"), outputBuffer)
 			err2 := PrintOutputConfig(cCtx.String("usage"), outputBuffer)
 			if err != nil && err2 != nil {
-				return fmt.Errorf("%w and %s", err, err2)
+				return fmt.Errorf("%w and %w", err, err2)
 			}
 			return nil
 		// DEPRECATED

config/config.go

@@ -726,7 +726,7 @@ func fetchConfig(u *url.URL) ([]byte, error) {
 		body, err, retry := func() ([]byte, error, bool) {
 			resp, err := http.DefaultClient.Do(req)
 			if err != nil {
-				return nil, fmt.Errorf("retry %d of %d failed connecting to HTTP config server %w", i, retries, err), false
+				return nil, fmt.Errorf("retry %d of %d failed connecting to HTTP config server: %w", i, retries, err), false
 			}
 			defer resp.Body.Close()
 			if resp.StatusCode != http.StatusOK {

testutil/container.go

@@ -110,7 +110,7 @@ func (c *Container) LookupMappedPorts() error {
 
 		p, err := c.container.MappedPort(c.ctx, nat.Port(port))
 		if err != nil {
-			return fmt.Errorf("failed to find '%s' - %w", port, err)
+			return fmt.Errorf("failed to find %q - %w", port, err)
 		}
 		fmt.Printf("mapped container port '%s' to host port '%s'\n", port, p.Port())
 		c.Ports[port] = p.Port()