[gimp] devel-docs: fix typo in performance-logs.md TOC

[Ell <ell src gnome org>]

commit 5a077649f93cbc1452f49a81a42203f1f247a5f7
Author: Ell <ell_se yahoo com>
Date:   Thu Nov 8 10:17:17 2018 -0500

    devel-docs: fix typo in performance-logs.md TOC

 devel-docs/performance-logs/performance-logs.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/devel-docs/performance-logs/performance-logs.md b/devel-docs/performance-logs/performance-logs.md
index eb8565e25c..7dffb7fb9f 100644
--- a/devel-docs/performance-logs/performance-logs.md
+++ b/devel-docs/performance-logs/performance-logs.md
@@ -10,7 +10,7 @@ report performance-related issues.
 ## Table of Contents
 
   - [1. Recording Performance Logs](#1-recording-performance-logs)
-    - [1.1. Events Markers](#11-event-markers)
+    - [1.1. Event Markers](#11-event-markers)
   - [2. Reporting Performance-Related Issues](#2-reporting-performance-related-issues)
   - [3. What Information is Contained in the Log?](#3-what-information-is-contained-in-the-log)
   - [4. Viewing Performance Logs](#4-viewing-performance-logs)