[chore] docs(builder): fix link to releases page (open-telemetry#11260)

The location of builder binary releases has changed since v0.107.0.


https://github.com/open-telemetry/opentelemetry-collector/blob/main/CHANGELOG.md#-enhancements--3

> `ocb`: migrate build and release of ocb binaries to
opentelemetry-collector-releases repository (open-telemetry#10710) ocb binaries will
now be released under open-telemetry/opentelemetry-collector-releases
tagged as "cmd/builder/vX.XXX.X"

cmd/builder/README.md

@@ -61,7 +61,7 @@ There are two supported ways to install the builder: via the official releases (
 
 ### Official releases
 
-This is the recommended installation method. Download the binary for your respective platform under the ["Releases"](https://github.com/open-telemetry/opentelemetry-collector/releases?q=builder) page.
+This is the recommended installation method. Download the binary for your respective platform from the ["Releases"](https://github.com/open-telemetry/opentelemetry-collector-releases/releases?q=cmd/builder) page.
 
 ### `go install`