Template docs incorrect

[cristiano-belloni]

In https://github.com/jpmorganchase/modular/blob/caf75ab0f9638f6e13a34eecc66907391cdf0484/docs/concepts/templates.md

The strings PackageName__ and ComponentName__ present in any of the target files will be overwritten, respectively, by the target package name as-is and the target package name converted to PascalCase (the latter is useful for source code template files where, for example, a React component is created).

This is not true; currently we do that only for ts|tsx|js|jsx|json|md|txt files:

modular/packages/modular-scripts/src/addPackage.ts

Line 233 in caf75ab

if (/\.(ts|tsx|js|jsx|json|md|txt)$/i.test(packageFilePath)) {