Update specification/trace/sdk.md

Co-authored-by: Joshua MacDonald <[email protected]>

Author: carlosalberto

specification/trace/sdk.md

@@ -610,15 +610,15 @@ The following configuration properties should be available when creating the sam
 
 This is a sampler decorator. `AlwaysRecord` helps to have spans between
 always be processed by `SpanProcessor`s. It returns the following given
-a sampled flag from the root sampler:
+a sampled flag from the delegate sampler:
 
-* Root sampler returns `DROP` -> AlwaysRecord returns `RECORD_ONLY`
-* Root sampler returns `RECORD_ONLY` -> AlwaysRecord returns `RECORD_ONLY`
-* Root sampler returns `RECORD_AND_SAMPLE` -> AlwaysRecord returns `RECORD_AND_SAMPLE`
+* Delegate sampler returns `DROP` -> AlwaysRecord returns `RECORD_ONLY`
+* Delegate sampler returns `RECORD_ONLY` -> AlwaysRecord returns `RECORD_ONLY`
+* Delegate sampler returns `RECORD_AND_SAMPLE` -> AlwaysRecord returns `RECORD_AND_SAMPLE`
 
 Required parameters:
 
-* `root(Sampler)` - A delegate sampler called to determine whether a span
+* `delegate(Sampler)` - A delegate sampler called to determine whether a span
 is sampled or dropped
 
 #### CompositeSampler