[gtk-doc] Fix a typo in README

[Andre Klapper <aklapper src gnome org>]

commit 14391142ee9d43da116f0f530746ae34cc46930a
Author: Andre Klapper <a9016009 gmx de>
Date:   Fri Jan 8 20:18:34 2021 +0100

    Fix a typo in README

 README | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/README b/README
index 0a0b031..6cfe4fc 100644
--- a/README
+++ b/README
@@ -90,7 +90,7 @@ make dist
 Build using meson
 -----------------
 
-Support for meson is new and still experiemntal.
+Support for meson is new and still experimental.
 
 Build it from git:
 meson build .