docs(test): fix several typos

doc/mini-test.txt

@@ -215,7 +215,7 @@ organization with |MiniTest-test-case|.
 
 All its elements are one of three categories:
 - A callable (object that can be called; function or table with `__call`
-  metatble entry) is considered to define a test action. It will be called
+  metatable entry) is considered to define a test action. It will be called
   with "current arguments" (result of all nested `parametrize` values, read
   further). If it throws error, test has failed.
 - A test set (output of this function) defines nested structure. Its
@@ -783,15 +783,15 @@ Notes:
 - An important type of field is a "redirection table". It acts as a
   convenience wrapper for corresponding `vim.*` table. Can be used both to
   return and set values. Examples:
-    - `child.api.nvim_buf_line_count(0)` will execute
+    - `child.api.nvim_buf_line_count(0)` will act as
       `vim.api.nvim_buf_line_count(0)` inside child process and return its
       output to current process.
     - `child.bo.filetype = 'lua'` will execute `vim.bo.filetype = 'lua'`
       inside child process.
   They still have same limitations listed above, so are not perfect. In
   case of a doubt, use `child.lua()`.
 - Almost all methods use |vim.rpcrequest()| (i.e. wait for call to finish and
-  then return value). See for `*_notify` variant to use |vim.rpcnotify()|.
+  then return value). In a `*_notify` variant |vim.rpcnotify()| is used.
 - All fields and methods should be called with `.`, not `:`.
 
 Class ~
@@ -826,7 +826,7 @@ Fields ~
 {ensure_normal_mode} `(function)` Ensure normal mode.
 {get_screenshot} `(function)` Returns table with two "2d arrays" of single
   characters representing what is displayed on screen and how it looks.
-  Has `opts` table argument for optional configuratnion.
+  Has `opts` table argument for optional configuration.
 
 {job} `(table|nil)` Information about current job. If `nil`, child is not running.
 
@@ -932,7 +932,7 @@ Notes:
   in case of more than 94 different ways text is displayed on screen.
 
 Parameters ~
-{opts} `(table|nil)` Options. Possieble fields:
+{opts} `(table|nil)` Options. Possible fields:
   - <redraw> `(boolean)` - whether to call |:redraw| prior to computing
     screenshot. Default: `true`.
 

lua/mini/test.lua

@@ -230,7 +230,7 @@ MiniTest.current = { all_cases = nil, case = nil }
 ---
 --- All its elements are one of three categories:
 --- - A callable (object that can be called; function or table with `__call`
----   metatble entry) is considered to define a test action. It will be called
+---   metatable entry) is considered to define a test action. It will be called
 ---   with "current arguments" (result of all nested `parametrize` values, read
 ---   further). If it throws error, test has failed.
 --- - A test set (output of this function) defines nested structure. Its
@@ -615,7 +615,7 @@ MiniTest.execute = function(cases, opts)
   -- Execute queue ensuring order
   -- NOTE: Directly `vim.schedule` each step without an explicit queue handling
   -- is possible, but it might interfere with async-adjacent yet synchronous
-  -- functions (as `vim.wait()`) callsed inside cases outside of child process.
+  -- functions (as `vim.wait()`) called inside cases outside of child process.
   local exec_queue_step, n_queue = function(_) end, #queue
   exec_queue_step = function(n)
     queue[n]()
@@ -1171,7 +1171,7 @@ MiniTest.new_child_neovim = function()
 
     -- Properly exit Neovim. `pcall` avoids `channel closed by client` error.
     -- Also wait for it to actually close. This reduces simultaneously opened
-    -- Neovim instances and CPU load (overall reducing flacky tests).
+    -- Neovim instances and CPU load (overall reducing flaky tests).
     pcall(child.cmd, 'silent! 0cquit')
     vim.fn.jobwait({ child.job.id }, 1000)
 
@@ -1420,15 +1420,15 @@ end
 --- - An important type of field is a "redirection table". It acts as a
 ---   convenience wrapper for corresponding `vim.*` table. Can be used both to
 ---   return and set values. Examples:
----     - `child.api.nvim_buf_line_count(0)` will execute
+---     - `child.api.nvim_buf_line_count(0)` will act as
 ---       `vim.api.nvim_buf_line_count(0)` inside child process and return its
 ---       output to current process.
 ---     - `child.bo.filetype = 'lua'` will execute `vim.bo.filetype = 'lua'`
 ---       inside child process.
 ---   They still have same limitations listed above, so are not perfect. In
 ---   case of a doubt, use `child.lua()`.
 --- - Almost all methods use |vim.rpcrequest()| (i.e. wait for call to finish and
----   then return value). See for `*_notify` variant to use |vim.rpcnotify()|.
+---   then return value). In a `*_notify` variant |vim.rpcnotify()| is used.
 --- - All fields and methods should be called with `.`, not `:`.
 ---
 ---@class MiniTest.child
@@ -1461,7 +1461,7 @@ end
 ---@field ensure_normal_mode function Ensure normal mode.
 ---@field get_screenshot function Returns table with two "2d arrays" of single
 ---   characters representing what is displayed on screen and how it looks.
----   Has `opts` table argument for optional configuratnion.
+---   Has `opts` table argument for optional configuration.
 ---
 ---@field job table|nil Information about current job. If `nil`, child is not running.
 ---
@@ -1561,7 +1561,7 @@ end
 ---   94 characters (ASCII codes between 33 and 126), so there will be duplicates
 ---   in case of more than 94 different ways text is displayed on screen.
 ---
----@param opts table|nil Options. Possieble fields:
+---@param opts table|nil Options. Possible fields:
 ---   - <redraw> `(boolean)` - whether to call |:redraw| prior to computing
 ---     screenshot. Default: `true`.
 ---