Clarify descriptions for the 'Requires*Directive' snippets

Author: travisclagrone

snippets/PowerShell.json

@@ -1029,51 +1029,51 @@
     "RequiresVersionDirective": {
         "prefix": "require-version",
         "body": [
-            "#Requires -Version ${1:Version}"
+            "#Requires -Version ${1:MinimumVersion}"
         ],
-        "description": "Require a minimum version of PowerShell to run the script."
+        "description": "Require a minimum version or greater of PowerShell to run the script."
     },
     "RequiresPSSnapinDirective": {
         "prefix": "require-snapin",
         "body": [
             "#Requires -PSSnapin ${1:Name}"
         ],
-        "description": "Require a PowerShell snap-in to run the script."
+        "description": "Require a specific PowerShell snap-in to run the script."
     },
     "RequiresPSSnapinVersionDirective": {
         "prefix": "require-snapin-version",
         "body": [
-            "#Requires -PSSnapIn ${1:Name} -Version ${2:Version}"
+            "#Requires -PSSnapIn ${1:Name} -Version ${2:MinimumVersion}"
         ],
-        "description": "Require a PowerShell snap-in of minimum version to run the script."
+        "description": "Require a specific PowerShell snap-in of minimum version or greater to run the script."
     },
     "RequiresModulesDirective": {
         "prefix": "require-module",
         "body": [
             "#Requires -Modules ${1:Name}"
         ],
-        "description": "Require one or more PowerShell modules to run the script."
+        "description": "Require one or more specific PowerShell modules to run the script."
     },
     "RequiresModulesVersionDirective": {
         "prefix": "require-module-version",
         "body": [
-            "#Requires -Modules @{ ModuleName='${1:Name}'; ModuleVersion='${2:Version}' }"
+            "#Requires -Modules @{ ModuleName='${1:Name}'; ModuleVersion='${2:MinimumVersion}' }"
         ],
-        "description": "Require a PowerShell module of minimum version to run the script."
+        "description": "Require a specific PowerShell module of minimum version or greater to run the script."
     },
     "RequiresModulesRequiredVersionDirective": {
         "prefix": "require-module-required-version",
         "body": [
-            "#Requires -Modules @{ ModuleName='${1:Name}'; RequiredVersion='${2:Version}' }"
+            "#Requires -Modules @{ ModuleName='${1:Name}'; RequiredVersion='${2:ExactVersion}' }"
         ],
-        "description": "Require a PowerShell module of exact version to run the script."
+        "description": "Require a specific PowerShell module of exact version to run the script."
     },
     "RequiresPSEditionDirective": {
         "prefix": "require-edition",
         "body": [
             "#Requires -PSEdition ${1|Core,Desktop|}"
         ],
-        "description": "Require a PowerShell edition to run the script."
+        "description": "Require a specific PowerShell edition to run the script."
     },
     "RequiresShellIdDirective": {
         "prefix": "require-shell",