Fix more issues with README (#1285)

Author: aggarw13

README.md

@@ -6,7 +6,7 @@
 
 We have released version 202009.00 of the AWS IoT Device SDK for Embedded-C (C-SDK). This release includes refactored MQTT, JSON Parser, and AWS IoT Device Shadow libraries for optimized memory usage and modularity, and includes dependent libraries via GitHub submoduling. These libraries have gone through code quality checks including verification that no function has a [GNU Complexity](https://www.gnu.org/software/complexity/manual/complexity.html) score over 8, and checks against deviations from mandatory rules in the [MISRA coding standard](https://www.misra.org.uk/MISRAHome/MISRAC2012/tabid/196/Default.aspx). Deviations from the MISRA C:2012 guidelines are documented under [MISRA Deviations](MISRA.md). This library has also undergone both static code analysis from [Coverity static analysis](https://scan.coverity.com/), and validation of memory safety and proof of functional correctness through the CBMC automated reasoning tool.  
 
-If you are upgrading from v3.x of the C-SDK to the 202009.00 release, please follow the [migration guide](https://docs.aws.amazon.com/freertos/latest/lib-ref/embedded-csdk/202009.00/lib-ref/migration_guide.html). If you are using the C-SDK v4_beta_deprecated branch, note that we will continue to maintain this branch for critical bug fixes and security patches but will not add new features to it. See the C-SDK v4_beta_deprecated branch [README](https://github.com/aws/aws-iot-device-sdk-embedded-C/blob/v4_beta_deprecated/README.md) for additional details. 
+If you are upgrading from v3.x of the C-SDK to the 202009.00 release, please follow the [migration guide](https://docs.aws.amazon.com/freertos/latest/lib-ref/embedded-csdk/202009.00/lib-ref/docs/doxygen/output/html/migration_guide.html). If you are using the C-SDK v4_beta_deprecated branch, note that we will continue to maintain this branch for critical bug fixes and security patches but will not add new features to it. See the C-SDK v4_beta_deprecated branch [README](https://github.com/aws/aws-iot-device-sdk-embedded-C/blob/v4_beta_deprecated/README.md) for additional details. 
 
 ## Overview
 
@@ -116,17 +116,12 @@ The libraries in this SDK are not dependent on any operating system. However, th
 
 It is required to setup an AWS account and access the AWS IoT Console for running demos and tests. Follow the links to:
 
--  [Setup an AWS account](https://docs.aws.amazon.com/iot/latest/developerguide/iot-console-signin.html).
+-  [Setup an AWS account](https://portal.aws.amazon.com/billing/signup#/start).
 
 -  [Sign-in to the AWS IoT Console](https://aws.amazon.com/console/) after setting up the AWS account.
 
 
 
-*Note: If using the Provisioning library, a fleet provisioning template, a provisioning claim, IoT policies and IAM policies need to be setup for the AWS account. Complete the steps to setup your device and AWS IoT account outlined [here](https://docs.aws.amazon.com/iot/latest/developerguide/provision-wo-cert.html#use-claim).*
-
-
-
-
 ### Configuring the MQTT mutual auth demo
 
 - You can pass the following configuration settings as command line options in order to run the mutual auth demo:
@@ -138,12 +133,11 @@ cmake .. -DAWS_IOT_ENDPOINT="aws-iot-endpoint" -DROOT_CA_CERT_PATH="root-ca-path
 
 	- Set `AWS_IOT_ENDPOINT` to your custom endpoint. This is found on the *Settings* page of the AWS IoT Console and has a format of `ABCDEFG1234567.iot.us-east-2.amazonaws.com`.
 
-	- Set `ROOT_CA_CERT_PATH` to the path of the root CA certificate downloaded when setting up the device certificate (or Provisioning Claim for Fleet Provisioning) in [AWS IoT Account Setup](https://github.com/aws/aws-iot-device-sdk-embedded-C/tree/v4_beta#aws-iot-account-setup).
-
-	- Set `CLIENT_CERT_PATH` to the path of the client certificate downloaded when setting up the device certificate (or Provisioning Claim for Fleet Provisioning) in [AWS IoT Account Setup](https://github.com/aws/aws-iot-device-sdk-embedded-C/tree/v4_beta#aws-iot-account-setup).
+	- Set `ROOT_CA_CERT_PATH` to the path of the root CA certificate downloaded when setting up the device certificate in [AWS IoT Account Setup](#aws-iot-account-setup).
 
-	- Set `CLIENT_PRIVATE_KEY_PATH` to the path of the private key downloaded when setting up the device certificate (or Provisioning Claim for Fleet Provisioning) in [AWS IoT Account Setup](https://github.com/aws/aws-iot-device-sdk-embedded-C/tree/v4_beta#aws-iot-account-setup).
+	- Set `CLIENT_CERT_PATH` to the path of the client certificate downloaded when setting up the device certificate in [AWS IoT Account Setup](#aws-iot-account-setup).
 
+	- Set `CLIENT_PRIVATE_KEY_PATH` to the path of the private key downloaded when setting up the device certificate in [AWS IoT Account Setup](#aws-iot-account-setup).
 
 
 ### Build Steps