rm fast mode sync

Author: benbaley

docs/成为主网验证节点.md

@@ -184,7 +184,7 @@ nohup platon --identity platon --datadir ./data --port 16789 --http.port 6789 --
 | --nodekey      | Specify the node private key file                            |
 | --cbft.blskey  | Specify the node bls private key file                        |
 | --verbosity    | The level of logging, 0: CRIT;  1: ERROR; 2: WARN;  3: INFO;  4: DEBUG; 5: TRACE |
-| --syncmode     | fast: Fast synchronization mode, full: All synchronous mode  |
+| --syncmode     | snap: Snap synchronization mode, full: All synchronous mode  |
 | --db.nogc      | Enable archive mode, when this switch is turned on, the garbage collection mechanism will no longer work, so the CPU overhead will be reduced and the corresponding disk overhead will be increased |
 | --allow-insecure-unlock   | Enable unlockAccount function    |
 

docs/成为开发网验证节点.md

@@ -189,7 +189,7 @@ cd ~/platon-node/ && nohup platon --identity platon-node --datadir ./data --port
 | --nodekey      | Specify the node private key file                                                |
 | --cbft.blskey  | Specify the node bls private key file                                            |
 | --verbosity    | The level of logging, 0: CRIT;  1: ERROR; 2: WARN;  3: INFO;  4: DEBUG; 5: TRACE |
-| --syncmode     | fast: Fast synchronization mode, full: All synchronous mode                      |
+| --syncmode     | snap: Snap synchronization mode, full: All synchronous mode                      |
 | --db.nogc      | Enable archive mode, when this switch is turned on, the garbage collection mechanism will no longer work, so the CPU overhead will be reduced and the corresponding disk overhead will be increased |
 
 See more parameters with the command `platon --help`