fix(docs): mangle command to two lines to please clang-format

Author: tyeth

src/AdafruitIO_Definitions.h

@@ -119,7 +119,8 @@ class AdafruitIOGroupCallback {
 certificates is no longer recommended. Migrate to a larger MCU like ESP32
 which can accomodate root certificates and verify chains of trust.  */
 /* For older devices like ESP8266 you can generate the latest fingerprint with:
-echo | openssl s_client -connect io.adafruit.com:443 | openssl x509 -fingerprint -noout
+echo | openssl s_client -connect io.adafruit.com:443 | openssl x509 -fingerprint
+-noout
 */
 #define AIO_SSL_FINGERPRINT                                                    \
   "47 D2 CB 14 DF 38 97 59 C6 65 1A 1F 3E 00 1E 53 CC A5 17 E0" ///< Latest