feat: set proposal branch prefix to `pr/`

from `prs/`.

whilst plural reflects usage of `heads` and `tags` in git refs,
singular is shorter and more reflective of usage of branch prefixes
such as `feature/` `fix/`

1 files changed, 1 insertions, 1 deletions

diff --git a/test_utils/src/lib.rs b/test_utils/src/lib.rs
index 84ae8a9..56e9b17 100644
--- a/test_utils/src/lib.rs
+++ b/test_utils/src/lib.rs
@@ -1098,7 +1098,7 @@ pub fn get_proposal_branch_name_from_events(
                 })
         }) {
             return Ok(format!(
-                "prs/{}({})",
+                "pr/{}({})",
                 branch_name_in_event,
                 &event.id.to_hex().as_str()[..8],
             ));