patch 8.2.3637: typos in test files

Problem:    Typos in test files.
Solution:   Correct the typos. (Dominique Pellé, closes #9175)
diff --git a/src/testdir/test_trycatch.vim b/src/testdir/test_trycatch.vim
index 50c1c65..69c7db0 100644
--- a/src/testdir/test_trycatch.vim
+++ b/src/testdir/test_trycatch.vim
@@ -49,7 +49,7 @@
   Xpath 'i'
 endfunc
 
-" Also try using "fina" and "final" and "finall" as abbraviations.
+" Also try using "fina" and "final" and "finall" as abbreviations.
 func T25_G()
   if 1
     try