Fixup readme logo links and readme style (#1088)

* Fixup readme logo links and readme style

* Tweak

* Tweak logo centering

README.md

@@ -1,21 +1,25 @@
+<p align="center">
 <picture>
-  <source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/JuliaIO/HDF5.jl/master/docs/src/assets/logo-dark.svg">
-  <source media="(prefers-color-scheme: light)" srcset="https://raw.githubusercontent.com/JuliaIO/HDF5.jl/master/docs/src/assets/logo.svg">
+  <source media="(prefers-color-scheme: dark)" srcset="./docs/src/assets/logo-dark.svg">
+  <img alt="HDF5.jl" src="./docs/src/assets/logo.svg" width=350 height=125>
 </picture>
-
+</p>
 
 _HDF5 interface for the Julia language_
+-
+
+
+[HDF5](https://www.hdfgroup.org/solutions/hdf5/) is a file format and library for storing and
+accessing data, commonly used for scientific data. HDF5 files can be created and read by numerous
+[programming languages](https://en.wikipedia.org/wiki/Hierarchical_Data_Format#Interfaces). This
+package provides an interface to the HDF5 library for the Julia language.
 
 
 [![Stable](https://img.shields.io/badge/documentation-blue.svg)](https://JuliaIO.github.io/HDF5.jl/stable)
 [![Build Status](https://github.com/JuliaIO/HDF5.jl/workflows/CI/badge.svg?branch=master)](https://github.com/JuliaIO/HDF5.jl/actions)
 [![Coverage](https://codecov.io/gh/JuliaIO/HDF5.jl/branch/master/graph/badge.svg)](https://codecov.io/gh/JuliaIO/HDF5.jl)
 <!-- [![Coverage](https://coveralls.io/repos/github/JuliaIO/HDF5.jl/badge.svg?branch=master)](https://coveralls.io/github/JuliaIO/HDF5.jl?branch=master) -->
 
-[HDF5](https://www.hdfgroup.org/solutions/hdf5/) is a file format and library for storing and
-accessing data, commonly used for scientific data. HDF5 files can be created and read by numerous
-[programming languages](https://en.wikipedia.org/wiki/Hierarchical_Data_Format#Interfaces). This
-package provides an interface to the HDF5 library for the Julia language.
 
 ### Changelog