fix: typo in sampling docs (open-telemetry#4162)

Author: calleo

opentelemetry-sdk/src/opentelemetry/sdk/trace/sampling.py

@@ -68,10 +68,10 @@
 
     * always_on - Sampler that always samples spans, regardless of the parent span's sampling decision.
     * always_off - Sampler that never samples spans, regardless of the parent span's sampling decision.
-    * traceidratio - Sampler that samples probabalistically based on rate.
+    * traceidratio - Sampler that samples probabilistically based on rate.
     * parentbased_always_on - (default) Sampler that respects its parent span's sampling decision, but otherwise always samples.
     * parentbased_always_off - Sampler that respects its parent span's sampling decision, but otherwise never samples.
-    * parentbased_traceidratio - Sampler that respects its parent span's sampling decision, but otherwise samples probabalistically based on rate.
+    * parentbased_traceidratio - Sampler that respects its parent span's sampling decision, but otherwise samples probabilistically based on rate.
 
 Sampling probability can be set with ``OTEL_TRACES_SAMPLER_ARG`` if the sampler is traceidratio or parentbased_traceidratio. Rate must be in the range [0.0,1.0]. When not provided rate will be set to
 1.0 (maximum rate possible).
@@ -386,7 +386,7 @@ def get_description(self):
 class ParentBasedTraceIdRatio(ParentBased):
     """
     Sampler that respects its parent span's sampling decision, but otherwise
-    samples probabalistically based on `rate`.
+    samples probabilistically based on `rate`.
     """
 
     def __init__(self, rate: float):