docs: fix typos (#27868)

Co-authored-by: ite-usagi <77563904+ite-usagi@users.noreply.github.com>
Co-authored-by: v-sim <56476039+v-sim@users.noreply.github.com>
Co-authored-by: Evgeni Chasnovski <evgeni.chasnovski@gmail.com>
Co-authored-by: zeertzjq <zeertzjq@outlook.com>
Co-authored-by: Quico Augustijn <quico.public@gmail.com>
Co-authored-by: nhld <nahnera@gmail.com>
Co-authored-by: francisco souza <108725+fsouza@users.noreply.github.com>

test/README.md

@@ -252,7 +252,7 @@ by the semantic component they are testing.
 - _Functional tests_
   ([test/functional](https://github.com/neovim/neovim/tree/master/test/functional))
   are higher-level (plugins and user input) than unit tests; they are organized
-  by concept. 
+  by concept.
     - Try to find an existing `test/functional/*/*_spec.lua` group that makes
       sense, before creating a new one.
 
@@ -276,9 +276,9 @@ the file).
 Configuration
 =============
 
-Test behaviour is affected by environment variables. Currently supported 
-(Functional, Unit, Benchmarks) (when Defined; when set to _1_; when defined, 
-treated as Integer; when defined, treated as String; when defined, treated as 
+Test behaviour is affected by environment variables. Currently supported
+(Functional, Unit, Benchmarks) (when Defined; when set to _1_; when defined,
+treated as Integer; when defined, treated as String; when defined, treated as
 Number; !must be defined to function properly):
 
 - `BUSTED_ARGS` (F) (U): arguments forwarded to `busted`.

test/old/testdir/test.sh

@@ -58,7 +58,7 @@ check_core_dumps() {
 }
 
 check_logs() {
-  # Iterate through each log to remove an useless warning.
+  # Iterate through each log to remove a useless warning.
   # shellcheck disable=SC2044
   for log in $(find "${1}" -type f -name "${2}"); do
     sed -i "${log}" \

test/unit/helpers.lua

@@ -209,7 +209,7 @@ local function cimport(...)
       local new_cdefs = Set:new()
       for line in body:gmatch('[^\r\n]+') do
         line = trim(line)
-        -- give each #pragma pack an unique id, so that they don't get removed
+        -- give each #pragma pack a unique id, so that they don't get removed
         -- if they are inserted into the set
         -- (they are needed in the right order with the struct definitions,
         -- otherwise luajit has wrong memory layouts for the structs)