rw2: Add missing space after link

Signed-off-by: Julien Pivotto <[email protected]>

Author: roidelapluie

docs/specs/prw/remote_write_spec_2_0.md

@@ -10,7 +10,7 @@ sort_rank: 2
 
 The Remote-Write specification, in general, is intended to document the standard for how Prometheus and Prometheus Remote-Write compatible senders send data to Prometheus or Prometheus Remote-Write compatible receivers.
 
-This document is intended to define a second version of the [Prometheus Remote-Write](/docs/specs/remote_write_spec) API with minor changes to protocol and semantics. This second version adds a new Protobuf Message with new features enabling more use cases and wider adoption on top of performance and cost savings. The second version also deprecates the previous Protobuf Message from a [1.0 Remote-Write specification](/docs/specs/remote_write_spec/#protocol) and adds mandatory [`X-Prometheus-Remote-Write-*-Written` HTTP response headers](#required-written-response-headers)for reliability purposes. Finally, this spec outlines how to implement backwards-compatible senders and receivers (even under a single endpoint) using existing basic content negotiation request headers. More advanced, automatic content negotiation mechanisms might come in a future minor version if needed. For the rationales behind the 2.0 specification, see [the formal proposal](https://github.com/prometheus/proposals/pull/35).
+This document is intended to define a second version of the [Prometheus Remote-Write](/docs/specs/remote_write_spec) API with minor changes to protocol and semantics. This second version adds a new Protobuf Message with new features enabling more use cases and wider adoption on top of performance and cost savings. The second version also deprecates the previous Protobuf Message from a [1.0 Remote-Write specification](/docs/specs/remote_write_spec/#protocol) and adds mandatory [`X-Prometheus-Remote-Write-*-Written` HTTP response headers](#required-written-response-headers) for reliability purposes. Finally, this spec outlines how to implement backwards-compatible senders and receivers (even under a single endpoint) using existing basic content negotiation request headers. More advanced, automatic content negotiation mechanisms might come in a future minor version if needed. For the rationales behind the 2.0 specification, see [the formal proposal](https://github.com/prometheus/proposals/pull/35).
 
 The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED",  "MAY", and "OPTIONAL" in this document are to be interpreted as described in [RFC 2119](https://datatracker.ietf.org/doc/html/rfc2119).