Fix some examples and regenerate docs, should fix: #4455 (#4639)

docs/commands/compact.md

@@ -26,7 +26,7 @@ Filter out all records where 'World' is null (Returns the table)
 > echo [["Hello" "World"]; [$nothing 3]]| compact World
 ```
 
-Filter out all instances of nothing from a list (Returns [1,2]
+Filter out all instances of nothing from a list (Returns [1,2])
 ```shell
 > echo [1, $nothing, 2] | compact
 ```

docs/commands/export.md

@@ -9,3 +9,10 @@ Export custom commands or environment variables from a module.
 ## Signature
 
 ```> export ```
+
+## Examples
+
+Export a definition from a module
+```shell
+> module utils { export def my-command [] { "hello" } }; use utils my-command; my-command
+```

docs/commands/extern.md

@@ -14,3 +14,10 @@ Define a signature for an external command
 
  -  `def_name`: definition name
  -  `params`: parameters
+
+## Examples
+
+Write a signature for an external command
+```shell
+> extern echo [text: string]
+```

docs/commands/hash_base64.md

@@ -27,7 +27,7 @@ Base64 encode a string with default settings
 
 Base64 encode a string with the binhex character set
 ```shell
-> echo 'username:password' | hash base64 --character_set binhex --encode
+> echo 'username:password' | hash base64 --character-set binhex --encode
 ```
 
 Base64 decode a value

docs/commands/run-external.md

@@ -15,3 +15,10 @@ Runs external command
  -  `...rest`: external command to run
  -  `--redirect-stdout`: redirect-stdout
  -  `--redirect-stderr`: redirect-stderr
+
+## Examples
+
+Run an external command
+```shell
+> run-external "echo" "-n" "hello"
+```