[website_docs] Link to latest release

[chalin]

Contributes to open-telemetry/opentelemetry.io#905. /cc @austinlparker

[codecov]

Codecov Report

Merging #475 (49c1287) into main (57a2191) will increase coverage by 3.28%.
The diff coverage is 89.50%.

❗ Current head 49c1287 differs from pull request most recent head c16e9a8. Consider uploading reports for the commit c16e9a8 to get more accurate results

@@             Coverage Diff              @@
##               main     #475      +/-   ##
============================================
+ Coverage     91.19%   94.48%   +3.28%     
- Complexity      809      890      +81     
============================================
  Files            76       89      +13     
  Lines          1988     2231     +243     
============================================
+ Hits           1813     2108     +295     
+ Misses          175      123      -52     

Impacted Files	Coverage Δ
src/API/Baggage/Baggage.php	90.32% <0.00%> (ø)
src/API/Trace/SpanContext.php	100.00% <ø> (ø)
src/API/Trace/SpanContextKey.php	75.00% <ø> (ø)
src/Context/FiberNotSupportedContextStorage.php	0.00% <0.00%> (ø)
...rc/Context/Propagation/ArrayAccessGetterSetter.php	100.00% <ø> (ø)
src/Context/Propagation/MultiTextMapPropagator.php	100.00% <ø> (ø)
src/Context/fiber/zend_observer_fiber.php	0.00% <0.00%> (ø)
src/Contrib/OtlpGrpc/Exporter.php	98.63% <ø> (-0.02%)	⬇️
...c/SDK/Trace/Propagation/TraceContextPropagator.php	100.00% <ø> (ø)
src/SDK/Trace/Sampler/ParentBased.php	100.00% <ø> (ø)
... and 43 more

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