Source File: change header=0 to header=null in docs (airbytehq#35595)

CI tests failed because the version was not incremented, despite only a single line being altered in the documentation. This change is minor and can be safely merged.

Author: roman-yermilov-gl

airbyte-integrations/connectors/source-file/poetry.lock

@@ -3,7 +3,7 @@ requires = [ "poetry-core>=1.0.0",]
 build-backend = "poetry.core.masonry.api"
 
 [tool.poetry]
-version = "0.3.16"
+version = "0.4.0"
 name = "source-file"
 description = "Source implementation for File"
 authors = [ "Airbyte <[email protected]>",]

airbyte-integrations/connectors/source-file/pyproject.toml

@@ -104,6 +104,7 @@ For example, if the format `CSV` is selected, then options from the [read_csv](h
 
 - It is therefore possible to customize the `delimiter` (or `sep`) to in case of tab separated files.
 - Header line can be ignored with `header=0` and customized with `names`
+- If a file has no header, it is required to set `header=null`; otherwise, the first record will be missing
 - Parse dates for in specified columns
 - etc