[doc] fix broken link in execution_correctness spec
Link was pointing to TCB.md, when it should be pointing to the
../README.md file.
Closes:
This specification outlines the design and implementation of Diem Execution Correctness (LEC): a secured service
dedicated for executing transactions correctly (with the MOVE VM) and used by Consensus in the Diem payment network.
-For those
-unfamiliar with the execution flow of TCB, we recommend reading the architecture of [Trusted Computing Base (TCB)](../TCB.md).
+For those unfamiliar with the execution flow of TCB, we recommend reading the architecture of [Trusted Computing Base (TCB)](../README.md).
## Overview and Architecture
