Small wording improvements

docs/backtesting.md

@@ -74,7 +74,7 @@ freqtrade backtesting --export trades --export-filename=backtest_samplestrategy.
 
 #### Supplying custom fee value
 
-Sometimes your account has certain fee rabates, which are not visible to ccxt.
+Sometimes your account has certain fee rebates (fee reductions starting with a certain account size or monthly volume), which are not visible to ccxt.
 To account for this in backtesting, you can use `--fee 0.001` to supply this value to backtesting.
 This fee must be a percentage, and will be applied twice (once for trade entry, and once for trade exit).
 

docs/bot-usage.md

@@ -185,8 +185,8 @@ optional arguments:
                         Specify max_open_trades to use.
   --stake_amount STAKE_AMOUNT
                         Specify stake_amount.
-  --fee FLOAT           Specify fee %. Should be in %, will be applied twice
-                        (on trade entry and exit).
+  --fee FLOAT           Specify fee ratio. Will be applied twice (on trade
+                        entry and exit).
   --eps, --enable-position-stacking
                         Allow buying the same pair multiple times (position
                         stacking).
@@ -246,8 +246,8 @@ optional arguments:
                         Specify max_open_trades to use.
   --stake_amount STAKE_AMOUNT
                         Specify stake_amount.
-  --fee FLOAT           Specify fee %. Should be in %, will be applied twice
-                        (on trade entry and exit).
+  --fee FLOAT           Specify fee ratio. Will be applied twice (on trade
+                        entry and exit).
   --customhyperopt NAME
                         Specify hyperopt class name (default:
                         `DefaultHyperOpts`).
@@ -310,8 +310,8 @@ optional arguments:
                         Specify max_open_trades to use.
   --stake_amount STAKE_AMOUNT
                         Specify stake_amount.
-  --fee FLOAT           Specify fee %. Should be in %, will be applied twice
-                        (on trade entry and exit).
+  --fee FLOAT           Specify fee ratio. Will be applied twice (on trade
+                        entry and exit).
   --stoplosses STOPLOSS_RANGE
                         Defines a range of stoploss values against which edge
                         will assess the strategy. The format is "min,max,step"

freqtrade/configuration/cli_options.py

@@ -146,7 +146,7 @@ AVAILABLE_CLI_OPTIONS = {
     ),
     "fee": Arg(
         '--fee',
-        help='Specify fee %%. Should be in %%, will be applied twice (on trade entry and exit).',
+        help='Specify fee ratio. Will be applied twice (on trade entry and exit).',
         type=float,
         metavar='FLOAT',
     ),