feat: docs

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diff --git a/docs/misc/holiday.md b/docs/misc/holiday.md
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+# Holiday
+
+The `!holiday` command allows you to get information about today's and upcoming holidays.
+
+
+> **So far, only Russian holidays and in Russian.**
+
+
+## Syntax
+
+`!holiday [date]`
+
++ `[date]` (Optional) - The date on which you want to get a random holiday. 
+If it's not specified, today's date will be used.
+
+## Usage
+
++ `!holiday` - Get today's random holiday.
++ `!holiday 25.02` - Get a random holiday on February 25th.
++ `!holiday 25` - Get a random holiday on the 25th of this month.
++ `!holiday .02` - Get a random holiday for today's date in February *(e.g. if today is the 1st, then it's February 1st)*.
++ `!holiday yesterday` - Get yesterday's random holiday.
++ `!holiday tommorow` - Get tommorow's random holiday.
+
+## Response
+
++ `Holiday for 25.02 (3/8): День открытия спирта`
+
+## Important notes
+
++ The information is obtained from the third-party service ["ilotterytea/holidays"](https://hol.ilotterytea.kz)
+
+## Error handling
+
++ [Incorrect argument](/wiki/errors#3)
++ [External API error](/wiki/errors#20)
++ [Something went wrong](/wiki/errors#127)
diff --git a/docs/misc/mcsrv.md b/docs/misc/mcsrv.md
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+# Minecraft server status check
+
+The `!mcsrv` command allows you to quickly find out the status of Minecraft server.
+This is a handy command that solves the problem of
+logging into Minecraft and waiting for 20 seconds to load to check the server.
+
+## Syntax
+`!mcsrv [address]`
+
++ `[address]` - IP address or name address of the server.
+
+## Usage
+
++ `!mcsrv mc.hypixel.net`
++ `!mcsrv 12.255.56.21`
+
+## Responses
+
++ `✅ hypixel.net (209.222.114.115) | 36911/200000 | Hypixel Network [1.8-1.20]; HOLIDAYS EVENT | TRIPLE COINS AND EXP | 1.8.9`
++ `⛔ 12.255.56.21 (127.0.0.1)`
+
+## The meanings of the parts of the message *(separated by |)*
+
++ Alphabetic and numeric IP addresses.
++ The number of people playing at the moment and the maximum number of players.
++ The MOTD of the server. Separated by **;** *(semicolon)*.
++ Server version.
+
+
+## Important notes
+
++ The server status is taken from the third-party API ["mcsrvstat.us"](https://mcsrvstat.us).
+
+## Error handling
+
++ [Not enough arguments](/wiki/errors#0)
++ [Not found](/wiki/errors#12)
++ [Something went wrong](/wiki/errors#127)
diff --git a/docs/misc/ping.md b/docs/misc/ping.md
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+# Ping!
+The `!ping` command checks to see if it's alive and gives a bunch of other data like memory usage, compiler version, etc.
+
+## Syntax
++ `!ping`
+
+## Responses
++ `funnywhitecat C++17 (gcc ) · Uptime: 24d23h · Memory usage: 18MB`