Change "alignment" to "width"

[gewarren]

Change "alignment" to "width" in format string sections.
Do some other minor cleanup while you're at it.
(Hide whitespace changes.)
Fixes https://devdiv.visualstudio.com/DevDiv/_workitems/edit/2433364.

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📄 File	🔗 Preview link
docs/core/extensions/globalization.md	Globalization
docs/csharp/language-reference/tokens/interpolated.md	"$ - string interpolation - format string output"
docs/csharp/programming-guide/strings/index.md	Strings and string literals
docs/csharp/tutorials/string-interpolation.md	docs/csharp/tutorials/string-interpolation
docs/framework/configure-apps/file-schema/runtime/timespan-legacyformatmode-element.md	<TimeSpan_LegacyFormatMode> Element
docs/fundamentals/runtime-libraries/system-double.md	System.Double struct
docs/fundamentals/runtime-libraries/system-single.md	System.Single struct
docs/fundamentals/runtime-libraries/system-string-format.md	docs/fundamentals/runtime-libraries/system-string-format
docs/standard/base-types/composite-formatting.md	Composite formatting
docs/standard/base-types/creating-new.md	"Creating New Strings"
docs/standard/base-types/formatting-types.md	Overview: How to format numbers, dates, enums, and other types in .NET
docs/standard/base-types/how-to-pad-a-number-with-leading-zeros.md	docs/standard/base-types/how-to-pad-a-number-with-leading-zeros
docs/standard/base-types/miscellaneous-constructs-in-regular-expressions.md	Miscellaneous Constructs in Regular Expressions
docs/standard/base-types/standard-numeric-format-strings.md	Standard numeric format strings
docs/standard/base-types/stringbuilder.md	"Using the StringBuilder Class in .NET"
docs/visual-basic/language-reference/special-characters/interpolated.md	$ (Visual Basic Reference)
docs/visual-basic/programming-guide/language-features/strings/interpolated-strings.md	Interpolated strings (Visual Basic Reference)

[BillWagner]

This LGTM @gewarren

Let's