Adding changes of commit 23ef8f6 (#214)

* Adding changes of commit 23ef8f6

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

Author: AnkithB2020

content/datasheets/.DS_Store

@@ -118,5 +118,5 @@ If you need to remove files from your device you have two options, either connec
 ```python
 
 import os
-os.mkfs('/flash')
+os.fsformat('/flash')
 ```

content/gettingstarted/.DS_Store

@@ -35,7 +35,7 @@ If problems occur within the filesystem or you wish to factory reset your module
 ```python
 
 >>> import os
->>> os.mkfs('/flash')
+>>> os.fsformat('/flash')
 ```
 
 {{% hint style="danger" %}}
@@ -59,4 +59,3 @@ A hard reset is the same as performing a power cycle to the device. In order to
 >>> import machine
 >>> machine.reset()
 ```
-

content/gettingstarted/connection/.DS_Store

@@ -37,10 +37,10 @@ Please start with the following steps:
 2. Select Firmware Type `stable` in the communication window to upgrade to version `v1.18.1.r1`
 
 
-The modem firmware files are password protected, to download them you should be a forum.pycom.io member and access to: 
-Announcements & News -->  Announcements only for members --> Firmware Files for Sequans LTE modem now are secured, or clicking [Here](https://forum.pycom.io/topic/4020/firmware-files-for-sequans-lte-modem-now-are-secured).
+The modem firmware files are password protected. In order to download them, head to forum.pycom.io and become a member (if you aren't already) and click on:
+Announcements & News --> Announcements for members only --> the Firmware Files for the Sequans LTE modem are now secured or click here.
 
-You can find the different versions of firmwares available [here](https://software.pycom.io/downloads/sequans2.html).
+You can find the different available firmware versions [here](https://software.pycom.io/downloads/sequans2.html)
 
 We are using `CATM1-39529.zip` and `NB1-37781.zip` as examples in this tutorial.
 
@@ -56,8 +56,8 @@ Please note that the `updater.elf` file is only around 300K so you can also stor
 import sqnsupgrade
 sqnsupgrade.run('upgdiff_38638-to-39529.dup')
 ```
-If you are updating the Sequans firmware on your module for the first time, please use instead the file upgdiff_33080-to-39529.dup (1.2M) from the same archive.
-Similar upgrade packages are available for the NB-IoT firmwares. 
+If you are updating the Sequans firmware on your module for the first time, please use this file instead upgdiff_33080-to-39529.dup (1.2M), which is from the same archive.
+Similar upgrade packages are available for the NB-IoT firmware.
 {{% /hint %}}
 
 ## Via SD card
@@ -72,7 +72,10 @@ To transfer the firmware files onto the SD card you have two options:
 from machine import SD
 
 sd = SD()
-os.mkfs(sd)            # format SD card
+os.fsformat('/sd')            # format SD card
+from machine import SD
+sd = SD()
+fs = os.mkfat(sd)
 os.mount(sd, '/sd')    # mount it
 os.listdir('/sd')      # list its content
 ```
@@ -266,6 +269,4 @@ The latest version of the `sqnsupgrade` class has a few additional features that
      If the modem is in application mode, the current firmware version is displayed. This behaviour replaces the version() command which now is only available in uart() mode. Optional parameters are sqnsupgrade.info(verbose=False, debug=False)
 
 #### sqnsupgrade.run(load_fff=True)
-    New optional command line option load_fff for the sqnsupgrade.run() command. This is designed to be an internal flag. And should only applied when advised by pycom support.
-    
-
+There is an optional command line load_fff for the sqnsupgrade.run() command. This is designed to be an internal flag. IMPORTANT: This should only be used when advised by Pycom Support.