Small docs fixes (#13310)

DEVGUIDE.md

@@ -237,9 +237,9 @@ Where `<version>` corresponds to the latest Visual Studio version on your machin
 
 * Format using [the F# style guide](https://docs.microsoft.com/en-us/dotnet/fsharp/style-guide/)
 
-* Avoid tick identifiers like `body'`. They are generally harder to read and can't be inspected in the debugger as things stand. Generaly use R suffix instead, e.g. `bodyR`. The R can stand for "rewritten" or "result"
+* Avoid tick identifiers like `body'`. They are generally harder to read and can't be inspected in the debugger as things stand. Generally use R suffix instead, e.g. `bodyR`. The R can stand for "rewritten" or "result"
 
-* Avoid abbreviations like `bodyty` that run together lowercase are bad, really hard to head for newcomers. Use `bodyTy` instead.
+* Avoid abbreviations like `bodyty` that are all lowercase. They are really hard to read for newcomers. Use `bodyTy` instead.
 
 * See the compiler docs for common abbreviations
 

docs/overview.md

@@ -27,7 +27,7 @@ The following are the key data formats and internal data representations of the
 
 * _Input command-line arguments_  See [CompilerOptions.fs](https://github.com/dotnet/fsharp/blob/main/src/Compiler/Driver/CompilerOptions.fs) for the full code implementing the arguments table. Command-line arguments are also accepted by the F# Compiler Service API in project specifications, and as optional input to F# Interactive.
 
-* _Tokens_, see [pars.fsy](https://github.com/dotnet/fsharp/blob/main/src/Compiler/pars.fsy), [lex.fsl](https://github.com/dotnet/fsharp/blob/main/src/Compiler/lex.fsl), [lexhelp.fs](https://github.com/dotnet/fsharp/blob/main/src/Compiler/SyntaxTree/lexhelp.fs) and related files.
+* _Tokens_, see [pars.fsy](https://github.com/dotnet/fsharp/blob/main/src/Compiler/pars.fsy), [lex.fsl](https://github.com/dotnet/fsharp/blob/main/src/Compiler/lex.fsl), [LexHelpers.fs](https://github.com/dotnet/fsharp/blob/main/src/Compiler/SyntaxTree/LexHelpers.fs) and related files.
 
 * _Abstract Syntax Tree (AST)_, see [SyntaxTree.fs](https://github.com/dotnet/fsharp/blob/main/src/Compiler/SyntaxTree/SyntaxTree.fs), the untyped syntax tree resulting from parsing.