chore: some proofreading in the docs (#9223)

Hi, caught a few mistakes while reading the docs. Hope I can be of any
help.
Have a nice day.

docs/readthedocs/source/etl.rst

@@ -110,7 +110,7 @@ To avoid that, the ETL framework allows storing progress by setting `OnLoadCommi
 
 Then we can use this data to know the progress the ETL transformation made.
 
-You can also specify `ExtractStartKey` and `ExtractEndKey` to limit the nubmer
+You can also specify `ExtractStartKey` and `ExtractEndKey` to limit the number
 of items transformed.
 
 

docs/readthedocs/source/rpc/index.rst

@@ -1842,7 +1842,7 @@ Submit the mining hashrate to the blockchain.
    * - Type
      - Description
    * - ``BOOLEAN``
-     - ``true`` if submitting went through succesfully, ``false`` otherwise
+     - ``true`` if submitting went through successfully, ``false`` otherwise
 
 --------------
 

docs/readthedocs/source/stagedsync.rst

@@ -42,7 +42,7 @@ the process method takes the headers retrieve thanks to the fetcher and does the
 
     * Save block headers in database.
 
-This process repeates until we reach the maximun height. once it is reached the stage finish.
+This process repeats until we reach the maximum height. once it is reached the stage finish.
 
 Changes in DB:
 

docs/readthedocs/source/types.rst

@@ -22,7 +22,7 @@ Address represents the 20 byte address of an Ethereum account.
     type Hash [32]byte
 
 Hash represents the 32 byte Keccak256 hash of arbitrary data.
-Address repressents the 20 byte standard Ethereum Address
+Address represents the 20 byte standard Ethereum Address
 
 Both Hash and Address are bytes arrays.
 
@@ -60,7 +60,7 @@ Transaction
 
     type Transactions []*Transaction
 
-repressent an Ethereum Transaction.
+represent an Ethereum Transaction.
 
 **from**
 
@@ -218,7 +218,7 @@ Block
         ReceivedFrom interface{}
     }
 
-repressent a block of the chain.
+represent a block of the chain.
 
 **header**