Change OpenMP Image Syntax and Update RTD config (#2400)

* update rtd config

* use standard markdown syntax for openmp svg

* fix rtd config

.readthedocs.yaml

@@ -9,6 +9,10 @@ sphinx:
 formats: [htmlzip, pdf, epub]
 
 python:
-   version: "3.8"
    install:
    - requirements: docs/sphinx/requirements.txt
+
+build:
+   os: ubuntu-20.04
+   tools:
+      python: "3.8"

docs/reference/openmp/openmp.md

@@ -14,12 +14,7 @@ this ROCm release. See the list of supported GPUs in {doc}`/release/gpu_os_suppo
 The ROCm OpenMP compiler is implemented using LLVM compiler technology.
 {numref}`openmp-toolchain` illustrates the internal steps taken to translate a user’s application into an executable that can offload computation to the AMDGPU. The compilation is a two-pass process. Pass 1 compiles the application to generate the CPU code and Pass 2 links the CPU code to the AMDGPU device code.
 
-```{figure-md} openmp-toolchain
-
-<img src="/data/reference/openmp/openmp_toolchain.svg" alt="" width="950" height="768">
-
-OpenMP Toolchain
-```
+![OpenMP Toolchain](../../data/reference/openmp/openmp_toolchain.svg)
 
 ### Installation