replace tab with space

src/example_1/.gitignore

@@ -0,0 +1,15 @@
+.dub
+docs.json
+__dummy.html
+docs/
+/example_1
+example_1.so
+example_1.dylib
+example_1.dll
+example_1.a
+example_1.lib
+example_1-test-*
+*.exe
+*.o
+*.obj
+*.lst

src/example_1/dub.json

@@ -0,0 +1,10 @@
+{
+	"authors": [
+		"alexander"
+	],
+	"copyright": "Copyright © 2021, alexander",
+	"description": "Знакомство с языком D",
+	"license": "proprietary",
+	"name": "example_1",
+	"targetPath": "bin"
+}

src/example_1/source/app.d

@@ -0,0 +1,6 @@
+import std.stdio;
+
+void main()
+{
+    writeln("Hello, world!");
+}