minor #24353 [Validator] minor translation text fix (darnel)

This PR was merged into the 2.7 branch.

Discussion
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[Validator] minor translation text fix

Update validators.cs.xlf - Fix czech translation for "This field was not expected"

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | n/a
| Fixed tickets | none
| License       | none
| Doc PR        | none

This commit fixes grammatical issue for czech translation only.

Commits
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fbe7148000 Fix translation for "This field was not expected"

Author: fabpot

Resources/translations/validators.cs.xlf

@@ -36,7 +36,7 @@
             </trans-unit>
             <trans-unit id="9">
                 <source>This field was not expected.</source>
-                <target>Toto pole nebyla očekávána.</target>
+                <target>Toto pole nebylo očekáváno.</target>
             </trans-unit>
             <trans-unit id="10">
                 <source>This field is missing.</source>