fix typo

Author: midilab

README.md

@@ -8,7 +8,7 @@ A Cmake JUCE port of [Robin Schmidt`s Open303](https://github.com/RobinSchmidt/O
 
 To generate an **Xcode** project, run:
 ```sh
-cmake -B Build -G Xcode -D CMAKE_OSX_ARCHITECTURES=arm64\;x86_64 -D CMAKE_OSX_DEPLOYMENT_TARGET=10.13
+cmake -B build -G Xcode -D CMAKE_OSX_ARCHITECTURES=arm64\;x86_64 -D CMAKE_OSX_DEPLOYMENT_TARGET=10.13
 ```
 The `-D CMAKE_OSX_ARCHITECTURES=arm64\;x86_64` flag is required to build universal binaries.
 
@@ -18,7 +18,7 @@ The `-D CMAKE_OSX_DEPLOYMENT_TARGET=10.13` flag sets the minimum MacOS version t
 
 To generate a **Visual Studio 2022 (17)** project, run:
 ```sh
-cmake -B Build -G "Visual Studio 17"
+cmake -B build -G "Visual Studio 17"
 ```
 
 ---
@@ -32,7 +32,7 @@ cmake -B build
 
 To build the generated IDE project from the command line, run:
 ```sh
-cmake --build Build --config Release
+cmake --build build --config Release
 ```
 
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