fix: invalid API url

I misstyped the API URL T-T

comment_on_pr.sh

@@ -41,9 +41,9 @@ markdown_from_report() {
   cat <<-"EOF"
 <!-- AUTOGENERATED by nix-flake-outputs-size action -->
 
-# Flake output sizes
+## Flake output sizes
 
-<details><summary><b>Definitions:</b></summary>
+<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).
@@ -62,7 +62,7 @@ markdown_from_report() {
   fi
   cat <<-"EOF"
 
-<details><summary><b>Tips on reading this data:</b></summary>
+<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.
@@ -79,7 +79,7 @@ markdown_from_report() {
     compare=$(jq --slurp --from-file "${GITHUB_ACTION_PATH:-.}/compare.jq" "$1" "$2")
     if echo "$compare" | has_elements 'nixosConfigurations'; then
       cat <<-"EOF"
-				# NixOS Configurations
+				## NixOS Configurations
 
 				| Name | Size | Size Change | NAR Size | NAR Size Change |
 				|------|-----:|------------:|---------:|----------------:|
@@ -89,7 +89,7 @@ markdown_from_report() {
     fi
     if echo "$compare" | has_elements 'packages'; then
       cat <<-"EOF"
-				# Packages
+				## Packages
 
 				| Name | Size | Size Change | NAR Size | NAR Size Change |
 				|------|-----:|------------:|---------:|----------------:|
@@ -100,7 +100,7 @@ markdown_from_report() {
   else
     if has_elements 'nixosConfigurations' "$1"; then
       cat <<-"EOF"
-				# NixOS Configurations
+				## NixOS Configurations
 
 				| Name | Size | NAR Size |
 				|------|-----:|---------:|
@@ -110,7 +110,7 @@ markdown_from_report() {
     fi
     if has_elements 'packages' "$1"; then
       cat <<-"EOF"
-				# Packages
+				## Packages
 
 				| Name | Size | NAR Size |
 				|------|-----:|---------:|