Documentation improvements

[tfius]

Uploader is a utility for inserting vectors into a key-value store in "fairOS" using a CSV file as the input. The vectors are encoded using the Gob encoding format before being stored in the key-value store.
Command-line options for specifying various parameters required for the operations:

Option	Short Flag	Long Flag	Description	Required
Verbose	-l	--verbose	Show fairos and other debug logs	No
VectorCSVPath	-v	--vector-csv-path	Path to the embedding file	Yes
EnsRPC	-r	--rpc-endpoint	RPC endpoint for ENS authentication	Yes
BeeEndpoint	-b	--bee-api-endpoint	Bee api endpoint	Yes
StampID	-s	--stamp	Stamp id	Yes
FairOSUser	-u	--username	FDP portable username	Yes
FairOSPassword	-p	--password	Account password	Yes
Pod	-d	--pod	Pod name of the kv store	Yes
KVStore	-k	--kv-store	Kv store name	Yes
KVIndexType	-x		Index type for the values in the kv store (Default: 2)	No

graph TD
A[Start] --> B[Parse Command-line Flags]
B --> C[Initialize fairOS API]
C --> D[Login to fairOS]
D --> E[Create or Open Pod]
E --> F[Create or Open KV Store]
F --> G[Prepare KV Batch]
G --> H[Read Vectors from CSV File]
H --> I[Parse Vector and Encode]
I --> J[Insert Vector into KV Store]
J --> H
H --> L[End]

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