mdbx-ci: fix spelling Github action.

Change-Id: I64f170fd4e979c8175b1f80499dd1dfa6d2ee4cf

.github/actions/spelling/excludes.txt

@@ -3,3 +3,5 @@
 ^\.travis\.yml$
 \.def$
 ^packages/buildroot/
+^\.gitignore
+^AUTHORS

.github/actions/spelling/expect.txt

@@ -456,6 +456,7 @@ eturn
 etval
 euo
 Evensen
+Evensen's
 ewcommand
 EWOULDBLOCK
 Exa
@@ -579,6 +580,7 @@ Gibibyte
 gitdir
 github
 githubusercontent
+gitignore
 glibc
 globals
 gmail
@@ -1133,6 +1135,7 @@ olddata
 olen
 Olog
 OMG
+OMG's
 ominimal
 omp
 ondrej

.github/workflows/spelling.yml

@@ -9,4 +9,4 @@ jobs:
     - uses: actions/checkout@v2
       with:
         fetch-depth: 5
-    - uses: check-spelling/check-spelling@prerelease
+    - uses: check-spelling/check-spelling@main