docs: any path can be absolute or relative (#4035)

Fixes #4026

config/toml.go

@@ -67,6 +67,11 @@ func WriteConfigFile(configFilePath string, config *Config) {
 const defaultConfigTemplate = `# This is a TOML config file.
 # For more information, see https://github.com/toml-lang/toml
 
+# NOTE: Any path below can be absolute (e.g. "/var/myawesomeapp/data") or
+# relative to the home directory (e.g. "data"). The home directory is
+# "$HOME/.tendermint" by default, but could be changed via $TMHOME env variable
+# or --home cmd flag.
+
 ##### main base config options #####
 
 # TCP or UNIX socket address of the ABCI application,

docs/spec/reactors/mempool/config.md

@@ -51,4 +51,4 @@ If the directory passed in is an absolute path, the wal file is
 created there. If the directory is a relative path, the path is
 appended to home directory of the tendermint process to
 generate an absolute path to the wal directory
-(default `$HOME/.tendermint` or set via `TM_HOME` or `--home``)
+(default `$HOME/.tendermint` or set via `TM_HOME` or `--home`)

docs/tendermint-core/configuration.md

@@ -2,8 +2,9 @@
 
 Tendermint Core can be configured via a TOML file in
 `$TMHOME/config/config.toml`. Some of these parameters can be overridden by
-command-line flags. For most users, the options in the `##### main base configuration options #####` are intended to be modified while
-config options further below are intended for advance power users.
+command-line flags. For most users, the options in the `##### main base
+configuration options #####` are intended to be modified while config options
+further below are intended for advance power users.
 
 ## Options
 
@@ -16,6 +17,11 @@ like the file below, however, double check by inspecting the
 # This is a TOML config file.
 # For more information, see https://github.com/toml-lang/toml
 
+# NOTE: Any path below can be absolute (e.g. "/var/myawesomeapp/data") or
+# relative to the home directory (e.g. "data"). The home directory is
+# "$HOME/.tendermint" by default, but could be changed via $TMHOME env variable
+# or --home cmd flag.
+
 ##### main base config options #####
 
 # TCP or UNIX socket address of the ABCI application,