fix: invalid API url

I misstyped the API URL T-T

comment_on_pr.sh

@@ -43,11 +43,13 @@ markdown_from_report() {
 
 		# Flake output sizes
 
-		**Definitions:**
+		<details><summary><b>Definitions:</b></summary>
 
 		- `Name`: the name of the package/configuration.
 		- `Size`: the closure size (size on disk/NAR size + all transitive dependencies).
 		- `NAR Size`: the size of the build output (package without the dependencies).
+
+    </details>
 	EOF
   if [ "${2+set}" = "set" ]; then
     cat <<-"EOF"
@@ -56,7 +58,7 @@ markdown_from_report() {
   fi
   cat <<-"EOF"
 
-		**Tips on reading this data:**
+		<details><summary><b>Tips on reading this data:</b></summary>
 
 		- For NixOS configurations you generally care only about the `Size` (closure size/size on disk).
 		  - Reduce the `Size` by disabling unneeded services/default packages.
@@ -64,6 +66,8 @@ markdown_from_report() {
 		  - Reduce the `NAR Size` by reducing the size of the build outputs, e.g. don't copy unnecessary data to the $out dir, optimize binaries for size, etc.
 		  - Reduce the `Size` by reducing the dependencies (e.g. `buildInputs`).
 		  - Don't worry too much about size, some dependencies are deduplicated, e.g. `glibc` adds ~40MiB to the `Size`, but is generally shared by ~every binary on the system, so, chances are, you are already including it from somewhere else and statically linking with e.g. `musl` is not gonna improve things.
+
+    </details>
 	EOF
 
   if [ "${2+set}" = "set" ]; then