TDL-24642 document encoding format option (#987)

* document encoding format option

* Update sftp-v1.md

* Update file-requirements.yml

* retrigger checks

---------

Co-authored-by: Lucie Milan <[email protected]>
Co-authored-by: Guillaume Dalençon <[email protected]>

Author: 3 people

_data/taps/extraction/file-systems/file-requirements.yml

@@ -59,8 +59,9 @@ attributes:
     all: *delimiters
 
   - name: "Character encoding"
-    all: *encodings
-
+    amazon-s3-csv: *encodings
+    sftp: |
+      The default encoding is UTF-8, but it can be changed to any encoding format supported by Python 3.9. For more information, see the [Python documentation](https://docs.python.org/3.9/library/codecs.html#standard-encodings).
 
 # ------------------------------- #
 #          SUPPORT TABLE          #

_database-integrations/sftp/v1/sftp-v1.md

@@ -133,6 +133,13 @@ setup-steps:
     anchor: "add-stitch-data-source"
     content: |
       {% include shared/database-connection-settings.html type="general" %}
+  
+  - title: "Select an encoding format"
+    anchor: "select-encoding-format"
+    content: |
+      The default encoding format is `utf-8`, but you can update it by entering the name of the format in the **Encoding Format** field.
+
+      **Note**: The selected format will be used for all files selected. If a file is encoded in a different format, an error may occur. If you need to replicate data from files with different encoding formats, you should consider creating a different connection for each format.
 
   - title: "Configure tables"
     anchor: "configure-tables"
@@ -142,7 +149,7 @@ setup-steps:
       In the following sections, we'll walk you through how to configure a table in Stitch:
 
       {% for substep in step.substeps %}
-      - [Step 3.{{ forloop.index }}: {{ substep.title }}](#{{ substep.anchor }})
+      - [Step 5.{{ forloop.index }}: {{ substep.title }}](#{{ substep.anchor }})
       {% endfor %}
 
     substeps: