docs: fix README links leading nowhere (#3009)

Author: brancz

README.md

@@ -5,7 +5,7 @@
 
 # Parca Agent
 
-Parca Agent is an always-on sampling profiler that uses eBPF to capture raw profiling data with very low overhead. It observes user-space and kernel-space stacktraces [19 times per second](docs/design.md#cpu-sampling-frequency) and builds [pprof](https://github.com/google/pprof) formatted profiles from the extracted data. Read more details in the [design documentation](docs/design.md).
+Parca Agent is an always-on sampling profiler that uses eBPF to capture raw profiling data with very low overhead. It observes user-space and kernel-space stacktraces [19 times per second](https://www.parca.dev/docs/parca-agent-design#cpu-sampling-frequency) and builds [pprof](https://github.com/google/pprof) formatted profiles from the extracted data. Read more details in the [design documentation](https://www.parca.dev/docs/parca-agent-design).
 
 The collected data can be viewed locally via HTTP endpoints and then be configured to be sent to a [Parca](https://github.com/parca-dev/parca) server to be queried and analyzed over time.
 
@@ -241,9 +241,9 @@ Using relabeling the following labels can be attached to profiles:
 
 ## Security
 
-Parca Agent is required to be running as `root` user (or `CAP_SYS_ADMIN`). Various security precautions have been taken to protect users running Parca Agent. See details in [Security Considerations](./docs/security.md).
+Parca Agent is required to be running as `root` user (or `CAP_SYS_ADMIN`). Various security precautions have been taken to protect users running Parca Agent. See details in [Security Considerations](https://www.parca.dev/docs/parca-agent-security).
 
-To report a security vulnerability, see [this guide](./docs/security.md#Report-Security-Vulnerabilities).
+To report a security vulnerability, see [this guide](https://www.parca.dev/docs/parca-agent-security#report-security-vulnerabilities).
 
 ## Contributing