update links in README #917

Job	Run time
Run checks (ubuntu-latest)	20s
Run checks (macos-latest)	26s
Run checks (windows-latest)	1m 17s
Build library (linux-aarch64, ubuntu-latest, libaries_askar.so, aarch64-unknown-linux-gnu, true)	3m 29s
Build library (linux-x86_64, ubuntu-latest, libaries_askar.so, x86_64-unknown-linux-gnu, true)	3m 14s
Build library (iOS) (aarch64-apple-ios)	2m 41s
Build library (darwin-universal, macos-latest, libaries_askar.dylib, darwin-universal, beta)	3m 35s
Build library (Android) (aarch64-linux-android)	3m 50s
Build library (iOS) (aarch64-apple-ios-sim)	2m 9s
Run tests (ubuntu-latest)	2m 51s
Build library (Android) (armv7-linux-androideabi)	4m 2s
Build library (iOS) (x86_64-apple-ios)	2m 9s
Run tests (macos-latest)	2m 32s
Build library (windows-x86_64, windows-latest, aries_askar.dll, x86_64-pc-windows-msvc)	4m 49s
Build library (Android) (i686-linux-android)	3m 52s
Run tests (windows-latest)	5m 9s
Build library (Android) (x86_64-linux-android)	3m 53s
Create iOS xcframework	31s
Create library (Android)	8s
Create iOS and Android release assets	0s
Build and test Python wrapper (linux-aarch64, 3.8)	16s
Build and test Python wrapper (linux-x86_64, 3.8)	31s
Build and test Python wrapper (darwin-universal, 3.8)	54s
Build and test Python wrapper (windows-x86_64, 3.8)	32s
Successful build	1s
	53m 11s

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