Corrected instances of 2.7.12 with 2.7.11

Author: cmonr

docs/tools/offline/cli-setup.md

@@ -7,7 +7,7 @@ You can install Mbed CLI on Windows, Linux and Mac OS X.
 ## Requirements
 
 - **Python:** Mbed CLI is a Python script, so you'll need Python to use it:
-    - We test Mbed CLI with [Python versions 2.7.12+ and 3.6.5+](https://www.python.org/downloads/).
+    - We test Mbed CLI with [Python versions 2.7.11+ and 3.6.5+](https://www.python.org/downloads/).
     - pip.
 
     <span class="notes">**Note:** Python 3 usage is **not compatible** with Mbed OS versions older than 5.9 and Mbed CLI toolchain versions older than 1.7.2. </span>

docs/tutorials/quickstart/quick-start-cli.md

@@ -24,7 +24,7 @@ You can ensure Mbed CLI installed correctly by running `mbed help` from your com
 
 ###### 1. Download and install Python and Pip
 
-Download and install [Python versions 2.7.12+ or 3.6.5+](https://www.python.org/downloads/windows/) for Windows. Both Python versions will come with their own version of pip.
+Download and install [Python versions 2.7.11+ or 3.6.5+](https://www.python.org/downloads/windows/) for Windows. Both Python versions will come with their own version of pip.
 
 <span class="notes">**Note:** When the installer is launched, check the checkbox that says "Add Python X.Y to PATH", otherwise Windows will not know where to search for the Python executable.</span>
 
@@ -60,7 +60,7 @@ ARM_PATH=<path to ARM bin\>
 
 ##### 1. Install Python and Pip
 
-Mac OS X 10.8+ comes with Python 2.7 preinstalled by Apple. If you are running an earlier version of Mac OS X, download and install [Python versions 2.7.12+ or 3.6.5+](https://www.python.org/downloads/mac-osx/).
+Mac OS X 10.8+ comes with Python 2.7 preinstalled by Apple. If you are running an earlier version of Mac OS X, download and install [Python versions 2.7.11+ or 3.6.5+](https://www.python.org/downloads/mac-osx/).
 
 To install Pip, run `sudo easy_install pip` from your command-line.
 
@@ -96,7 +96,7 @@ ARM_PATH=<path to ARM bin\>
 
 ##### 1. Install Python and Pip
 
-Download and install [Python versions 2.7.12+ or 3.6.5+](https://www.python.org/downloads/source/) or you can use your distrubution's package manager to instal Python and pip.
+Download and install [Python versions 2.7.11+ or 3.6.5+](https://www.python.org/downloads/source/) or you can use your distrubution's package manager to instal Python and pip.
 
 As an example, the following can be used in Ubuntu: