docs: improve glossary and semantics page (#7267)

fix hyperlink, grammatical errors, and improve clarity

(cherry picked from commit 9ddc27d)

docs_app/content/guide/glossary-and-semantics.md

@@ -34,7 +34,7 @@ There are specific actions and events that occur between major entities in RxJS
 
 ### Subscribe
 
-The act of a [consumer](#consumer) requesting an Observable set up a [subscription](#subscription) so that it may [observe](#observation) a [producer](#producer). A subscribe action can occur with an observable via many different mechanisms. The primary mechanism is the [`subscribe` method](/api/index/class/Observable#subscribe) on the [Observable class](/api/index/class/Observable). Other mechanisms include the [`forEach` method](/api/index/class/Observable#forEach), functions like [`lastValueFrom`](/api/index/function/lastValueFrom), and [`firstValueFrom`](/api/index/function/firstValueFrom), and the deprecated [`toPromise` method](/api/index/class/Observable#forEach).
+The act of a [consumer](#consumer) requesting from an Observable to set up a [subscription](#subscription) so that it may [observe](#observation) a [producer](#producer). A subscribe action can occur with an observable via many different mechanisms. The primary mechanism is the [`subscribe` method](/api/index/class/Observable#subscribe) on the [Observable class](/api/index/class/Observable). Other mechanisms include the [`forEach` method](/api/index/class/Observable#forEach), functions like [`lastValueFrom`](/api/index/function/lastValueFrom), and [`firstValueFrom`](/api/index/function/firstValueFrom), and the deprecated [`toPromise` method](/api/index/class/Observable#forEach).
 
 ### Finalization
 
@@ -78,11 +78,11 @@ The act of one [producer](#producer) being [observed](#observation) by **many**
 
 ### Unicast
 
-The act of one [producer](#producer) being [observed](#observation) **only one** [consumer](#consumer). An observable is "unicast" when it only connects one [producer](#producer) to one [consumer](#consumer). Unicast doesn't necessarily mean ["cold"](#cold).
+The act of one [producer](#producer) being [observed](#observation) by **only one** [consumer](#consumer). An observable is "unicast" when it only connects one [producer](#producer) to one [consumer](#consumer). Unicast doesn't necessarily mean ["cold"](#cold).
 
 ### Cold
 
-An observable is "cold" when it creates a new [producer](#producer) during [subscribe](#subscribe) for every new [subscription](#subscription). As a result, a "cold" observables are _always_ [unicast](#unicast), being one [producer](#producer) [observed](#observation) by one [consumer](#consumer). Cold observables can be made [hot](#hot) but not the other way around.
+An observable is "cold" when it creates a new [producer](#producer) during [subscribe](#subscribe) for every new [subscription](#subscription). As a result, "cold" observables are _always_ [unicast](#unicast), being one [producer](#producer) [observed](#observation) by one [consumer](#consumer). Cold observables can be made [hot](#hot) but not the other way around.
 
 ### Hot
 
@@ -138,7 +138,7 @@ An [observer](#observer) that lacks all necessary [notification](#notification)
 
 ### Unhandled Errors
 
-An "unhandled error" is any [error](#error) that is not handled by a [consumer](#consumer)-provided function, which is generally provided during the [subscribe](#subscribe) action. If no error handler was provided, RxJS will assume the error is "unhandled" and rethrow the error on a new callstack or prevent ["producer interference"](#producer-interface).
+An "unhandled error" is any [error](#error) that is not handled by a [consumer](#consumer)-provided function, which is generally provided during the [subscribe](#subscribe) action. If no error handler was provided, RxJS will assume the error is "unhandled" and rethrow the error on a new callstack to prevent ["producer interference"](#producer-interference).
 
 ### Producer Interference