docs(book): trim any white space at the line right ending (#8242)

Signed-off-by: jsvisa <delweng@gmail.com>

book/cli/reth/db/clear.md

@@ -14,33 +14,33 @@ Commands:
 Options:
       --datadir <DATA_DIR>
           The path to the data dir for all reth files and subdirectories.
-          
+
           Defaults to the OS-specific data directory:
-          
+
           - Linux: `$XDG_DATA_HOME/reth/` or `$HOME/.local/share/reth/`
           - Windows: `{FOLDERID_RoamingAppData}/reth/`
           - macOS: `$HOME/Library/Application Support/reth/`
-          
+
           [default: default]
 
       --chain <CHAIN_OR_PATH>
           The chain this node is running.
           Possible values are either a built-in chain or the path to a chain specification file.
-          
+
           Built-in chains:
               mainnet, sepolia, goerli, holesky, dev
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+
           [default: mainnet]
 
       --instance <INSTANCE>
           Add a new instance of a node.
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+
           Configures the ports of the node to avoid conflicts with the defaults. This is useful for running multiple nodes on the same machine.
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+
           Max number of instances is 200. It is chosen in a way so that it's not possible to have port numbers that conflict with each other.
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+
           Changes to the following port numbers: - DISCOVERY_PORT: default + `instance` - 1 - AUTH_PORT: default + `instance` * 100 - 100 - HTTP_RPC_PORT: default - `instance` + 1 - WS_RPC_PORT: default + `instance` * 2 - 2
-          
+
           [default: 1]
 
   -h, --help
@@ -49,7 +49,7 @@ Options:
 Logging:
       --log.stdout.format <FORMAT>
           The format to use for logs written to stdout
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+
           [default: terminal]
 
           Possible values:
@@ -59,12 +59,12 @@ Logging:
 
       --log.stdout.filter <FILTER>
           The filter to use for logs written to stdout
-          
+
           [default: ]
 
       --log.file.format <FORMAT>
           The format to use for logs written to the log file
-          
+
           [default: terminal]
 
           Possible values:
@@ -74,22 +74,22 @@ Logging:
 
       --log.file.filter <FILTER>
           The filter to use for logs written to the log file
-          
+
           [default: debug]
 
       --log.file.directory <PATH>
           The path to put log files in
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+
           [default: <CACHE_DIR>/logs]
 
       --log.file.max-size <SIZE>
           The maximum size (in MB) of one log file
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+
           [default: 200]
 
       --log.file.max-files <COUNT>
           The maximum amount of log files that will be stored. If set to 0, background file logging is disabled
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+
           [default: 5]
 
       --log.journald
@@ -97,12 +97,12 @@ Logging:
 
       --log.journald.filter <FILTER>
           The filter to use for logs written to journald
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+
           [default: error]
 
       --color <COLOR>
           Sets whether or not the formatter emits ANSI terminal escape codes for colors and other text formatting
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+
           [default: always]
 
           Possible values:
@@ -113,7 +113,7 @@ Logging:
 Display:
   -v, --verbosity...
           Set the minimum log level.
-          
+
           -v      Errors
           -vv     Warnings
           -vvv    Info