Adding changes of commit 23ef8f6

Commit 23ef8f6 includes changes related to replacement of
os.mkfs() with os.fsformat()

Link explaining the replacement details:
https://forum.pycom.io/topic/3351/new-development-firmware-release-v1-19-0-b1/2

Issue: https://forum.pycom.io/topic/5606/what-happened-to-pin_deepsleep_wakeup/9

content/gettingstarted/programming/first-project.md

@@ -119,5 +119,4 @@ If you need to remove files from your device you have two options, either connec
 
 import os
 os.fsformat('/flash')
-
 ```

content/gettingstarted/programming/safeboot.md

@@ -36,7 +36,6 @@ If problems occur within the filesystem or you wish to factory reset your module
 
 >>> import os
 >>> os.fsformat('flash')
-
 ```
 
 {{% hint style="danger" %}}

content/tutorials/lte/firmware.md

@@ -72,7 +72,7 @@ To transfer the firmware files onto the SD card you have two options:
 from machine import SD
 
 sd = SD()
-os.fsformat('/sd')    #format SD card
+os.fsformat('/sd')    # format SD card
 from machine import SD
 sd = SD()
 fs = os.mkfat(sd)