docs: clean up whitespace and fix typo in tutorial.md (#8695)

* docs: remove trailing whitespace

* docs: fix typo in tutorial.md

docs/source/languages/dart.md

@@ -93,7 +93,7 @@ significant changes have been made.
    goal of this implementation.  Support for 16 bit integers was also added.
 5. The code generation in this offers an "ObjectBuilder", which generates code
    very similar to the SDK classes that consume FlatBuffers, as well as Builder
-   classes, which produces code which more closely resembles the builders in 
+   classes, which produces code which more closely resembles the builders in
    other languages. The ObjectBuilder classes are easier to use, at the cost of
    additional references allocated.
 

docs/source/languages/javascript.md

@@ -16,7 +16,7 @@ documentation to build `flatc` and should be familiar with
 
 ## FlatBuffers JavaScript library code location
 
-The generated code for the FlatBuffers JavaScript library can be found at 
+The generated code for the FlatBuffers JavaScript library can be found at
 https://www.npmjs.com/package/flatbuffers. To use it from sources:
 
 1. Run `npm run compile` from the main folder to generate JS files from TS.
@@ -36,7 +36,7 @@ transpile your sources to desired JS flavor. The minimal steps to get up and
 running with JS are:
 
 1. Generate TS files from `*.fbs` by using the `--ts` option.
-1. Transpile resulting TS files to desired JS flavor using `tsc` (see 
+1. Transpile resulting TS files to desired JS flavor using `tsc` (see
    https://www.typescriptlang.org/download for installation instructions).
 
 ~~~{.js}

docs/source/languages/kotlin.md

@@ -81,4 +81,4 @@ Kotlin generated code was designed to be as close as possible to the java counte
 The most obvious ones are:
 
 * Fields as accessed as Kotlin [properties](https://kotlinlang.org/docs/reference/properties.html)
-* Static methods are accessed in [companion object](https://kotlinlang.org/docs/reference/classes.html#companion-objects)
+* Static methods are accessed in [companion object](https://kotlinlang.org/docs/reference/classes.html#companion-objects)

docs/source/languages/lua.md

@@ -50,7 +50,7 @@ file into a `string`, which you pass to the `GetRootAsMonster` function:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.lua}
     -- require the library
     local flatbuffers = require("flatbuffers")
-    
+
     -- require the generated code
     local monster = require("MyGame.Sample.Monster")
 

docs/source/languages/swift.md

@@ -81,7 +81,7 @@ In some cases it's necessary to modify values in an existing FlatBuffer in place
       fatalError("couldn't mutate")
     }
     // mutate a struct field using flatbuffers struct
-    // DONT use monster.pos to mutate since swift copy on write 
+    // DONT use monster.pos to mutate since swift copy on write
     // will not mutate the value in the buffer
     let vec = monster.mutablePos.mutate(z: 4)