add spellcheck exceptions for csharp file

Author: alex-clickhouse

docs/integrations/language-clients/csharp.md

@@ -1170,7 +1170,7 @@ Property name matching with column type hints is case-sensitive. A property `Use
 **Limitations (Binary mode only):**
 - POCO types must be registered on the connection with `connection.RegisterJsonSerializationType<T>()` before serialization. Attempting to serialize an unregistered type throws `ClickHouseJsonSerializationException`.
 - Dictionary and array/list properties require type hints in the column definition to be serialized correctly. Without hints, use String mode instead.
-- Null values in POCO properties are only written when the path has a `Nullable(T)` type hint in the column definition. ClickHouse doesn't allow `Nullable` types inside dynamic JSON paths, so unhinted null properties are skipped.
+- Null values in POCO properties are only written when the path has a `Nullable(T)` type hint in the column definition. ClickHouse doesn't allow `Nullable` types inside dynamic JSON paths, so un-hinted null properties are skipped.
 - `ClickHouseJsonPath` and `ClickHouseJsonIgnore` attributes are ignored in String mode (they only work in Binary mode).
 
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scripts/aspell-dict-file.txt

@@ -1085,6 +1085,17 @@ Oleg
 sbyte
 ulong
 ushort
+BatchSize
+BearerToken
+CustomHeaders
+InsertOptions
+JsonReadMode
+JsonWriteMode
+MaxDegreeOfParallelism
+POCOs
+QueryId
+QueryOptions
+ReadStringsAsByteArrays
 --docs/whats-new/roadmap.md--
 roadmaps
 --docs/integrations/language-clients/python/index.md--