Fix error message in ggsave()

Author: alshan

devdocs/PUBLISHING.md

@@ -13,7 +13,7 @@
 
 ### Publishing to Sonatype Central repository
                    
-> **Note**: when publishing a "Release" version to Sonatype, PGP signature is required.
+> **Note**: when publishing a "Release" version to Sonatype, a PGP signature is required.
 >
 > See: https://central.sonatype.org/pages/working-with-pgp-signatures.html
         

plot-api/src/jvmMain/kotlin/org/jetbrains/letsPlot/export/ggsave.kt

@@ -241,12 +241,7 @@ private fun exportRasterImage(
                     """
                     
                     Can't export plot to raster formats: ${e::class.simpleName} "${e.message}".
-                    Please add "lets-plot-image-export-<version>.jar" to your classpath.
-                    A Gradle dependency example:
-                    
-                        implementation("org.jetbrains.lets-plot:lets-plot-image-export:<version>")
-                    
-                    where <version> is the version of the Lets-Plot Multiplatform artifact you are using.
+                    Please add "org.jetbrains.lets-plot:platf-awt:${VersionChecker.letsPlotVersion}" to your dependencies to enable raster image export.
                 """.trimIndent()
                 )
 

plot-api/src/jvmMain/kotlin/org/jetbrains/letsPlot/intern/settings/DefaultFrontendContext.kt

@@ -6,6 +6,7 @@
 package org.jetbrains.letsPlot.intern.settings
 
 import org.jetbrains.letsPlot.FrontendContext
+import org.jetbrains.letsPlot.export.VersionChecker
 import org.jetbrains.letsPlot.frontend.DefaultSwingFrontendContext
 
 actual fun createDefaultFrontendContext(): FrontendContext {
@@ -17,7 +18,7 @@ actual fun createDefaultFrontendContext(): FrontendContext {
                                     
                                     The frontend context is not defined.
                                     To define the frontend context please select one of the following options:
-                                    a. Add "org.jetbrains.lets-plot:platf-awt:<version>" to your dependencies.   
+                                    a. Add "org.jetbrains.lets-plot:platf-awt:${VersionChecker.letsPlotVersion}" to your dependencies.   
                                     b. Specify the frontend context explicitly: "LetsPlot.frontendContext = ..."
                                        
                                     """.trimIndent()