chore: Update readme intro language

Signed-off-by: binarylogic <[email protected]>

README.md

@@ -14,13 +14,13 @@
 
 ## What is Vector?
 
-Vector is a high-performance observability data platform (agent & aggregator)
-that puts you in control of your observability data. [Collect][docs.sources],
-[transform][docs.transforms], and [route][docs.sinks] all your logs, metrics,
-and traces to any vendors you want today and any other vendors you may want
-tomorrow. Vector enables cost reduction, novel data enrichment, and data
-security when you need it, not when is most convenient for your vendors.
-100% open source and up to 10x faster than every alternative.
+Vector is a high-performance, end-to-end (agent & aggregator) observability data
+platform that puts you in control of your observability data.
+[Collect][docs.sources], [transform][docs.transforms], and [route][docs.sinks]
+all your logs, metrics, and traces to any vendors you want today and any other
+vendors you may want tomorrow. Vector enables cost reduction, novel data
+enrichment, and data security when you need it, not when is most convenient for
+your vendors. 100% open source and up to 10x faster than every alternative.
 
 To get started, follow our [**getting started guides**][urls.getting_started]
 or [**install Vector**][docs.installation].